id large_stringlengths 9 16 | title large_stringlengths 1 382 | abstract large_stringlengths 3 6.09k | publish_date date32 | update_date date32 | categories large listlengths 1 13 | authors large_stringlengths 3 62.8k |
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cond-mat/9511012 | A compact formula for the density of states in a quantum well | In this paper we derive a formula for the density of states in the presence
of inelastic scattering in the quantum well of a double barrier structure as a
function of a characteristic time of the motion of electrons (namely, the round
trip time in the well) and of transmission probabilities for the whole
structure and ... | 1995-11-02 | 2009-10-28 | [
"cond-mat"
] | Giuseppe Iannaccone and Bruno Pellegrini |
cond-mat/9511013 | The effect of inter-edge Coulomb interactions on the transport between
quantum Hall edge states | In a recent experiment, Milliken {\em et al.} demonstrated possible evidence
for a Luttinger liquid through measurements of the tunneling conductance
between edge states in the $\nu=1/3$ quantum Hall plateau. However, at low
temperatures, a discrepancy exists between the theoretical predictions based on
Luttinger liqui... | 1995-11-02 | 2009-10-28 | [
"cond-mat"
] | K. Moon (UC-Davis) and S.M. Girvin (Indiana University) |
cond-mat/9511010 | An improved perturbation approach to the 2D Edwards polymer --
corrections to scaling | We present the results of a new perturbation calculation in polymer
statistics which starts from a ground state that already correctly predicts the
long chain length behaviour of the mean square end--to--end distance $\langle
R_N^2 \rangle\ $, namely the solution to the 2~dimensional~(2D) Edwards model.
The $\langle R_... | 1995-11-02 | 2009-10-28 | [
"cond-mat"
] | S. R. Shannon, T. C. Choy, R. J. Fleming (Department of Physics,
Monash University, Clayton, Victoria. Australia) |
cond-mat/9511011 | Decoherence in the Quantum Dynamics of a "Central Spin" Coupled to a
Spin Environment | We consider here the problem of a "central spin", with spin quantum number $S
\gg 1$, interacting with a set of microscopic spins. Interactions between the
microscopic spins are ignored. This model describes magnetic grains or magnetic
macromolecules (ferromagnetically or antiferromagnetically ordered) interacting
with... | 1995-11-02 | 2016-08-31 | [
"cond-mat"
] | N. V. Prokof'ev and P. C. E. Stamp |
cond-mat/9510172 | A New Phase of Tethered Membranes: Tubules | We show that fluctuating tethered membranes with {\it any} intrinsic
anisotropy unavoidably exhibit a new phase between the previously predicted
``flat'' and ``crumpled'' phases, in high spatial dimensions $d$ where the
crumpled phase exists. In this new "tubule" phase, the membrane is crumpled in
one direction but ext... | 1995-11-01 | 2009-10-28 | [
"cond-mat"
] | Leo Radzihovsky and John Toner |
cond-mat/9511001 | Finite-size scaling and the toroidal partition function of the critical
asymmetric six-vertex model | Finite-size corrections to the energy levels of the asymmetric six-vertex
model transfer matrix are considered using the Bethe ansatz solution for the
critical region. The non-universal complex anisotropy factor is related to the
bulk susceptibilities. The universal Gaussian coupling constant $g$ is also
related to the... | 1995-11-01 | 2009-10-28 | [
"cond-mat"
] | Jae Dong Noh and Doochul Kim (Seoul National University) |
cond-mat/9511006 | Anisotropic Scaling in Threshold Critical Dynamics of Driven Directed
Lines | The dynamical critical behavior of a single directed line driven in a random
medium near the depinning threshold is studied both analytically (by
renormalization group) and numerically, in the context of a Flux Line in a
Type-II superconductor with a bulk current $\vec J$. In the absence of
transverse fluctuations, the... | 1995-11-01 | 2009-10-28 | [
"cond-mat"
] | Deniz Ertas and Mehran Kardar |
cond-mat/9510173 | Coherent versus Incoherent Transport in Layered Doped Mott Insulators | There exist strong experimental evidences for the dimensional cross-over from
two to three dimensions as \lan compounds are overdoped. In this paper we
describe the dimensional cross-over of the layered correlated metal in the
gauge theory framework. In particular, we obtain the anomalous exponent 3/2 for
the temperatu... | 1995-11-01 | 2009-10-28 | [
"cond-mat"
] | H. C. Lee and P. B. Wiegmann |
cond-mat/9511008 | Surface Critical Phenomena in Interaction-Round-a-Face Models | A general scheme has been proposed to study the critical behaviour of
integrable interaction-round-a-face models with fixed boundary conditions. It
has been shown that the boundary crossing symmetry plays an important role in
determining the surface free energy. The surface specific heat exponent can
thus be obtained w... | 1995-11-01 | 2015-06-25 | [
"cond-mat"
] | Yu-kui Zhou and Murray T. Batchelor |
cond-mat/9511004 | $\epsilon$-Expansion of the Conductivity at the Superconductor-Mott
Insulator Transition | We study the critical behavior of the conductivity $\sigma(\omega)$ at the
zero temperature superconductor-Mott insulator transition in $d$ space-time
dimensions for a model of bosons with short-range interaction and no disorder.
We obtain $\sigma(\omega_n ) = (4e^2/\hbar) \sigma_{\epsilon}
\omega_n^{1-\epsilon}$, as p... | 1995-11-01 | 2009-10-28 | [
"cond-mat"
] | Rosario Fazio and Dario Zappala` |
cond-mat/9510171 | Hidden Massive Spectators in the Effective Field Theory for Integral
Quantum Hall Transitions | Integral quantum Hall plateau transitions in a planar lattice system due to
gap collapse can be described by an effective field theory with Dirac fermions.
We discuss how to reproduce the correct integral values for the Hall
conductance, $\sigma_{xy}$, before and after the plateau transition, which are
dictated by the ... | 1995-11-01 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | Yasuhiro Hatsugai (Applied Physics, U-Tokyo), Mahito Kohmoto (ISSP,
U-Tokyo), and Yong-Shi Wu(Physics, U-Utah) |
cond-mat/9511003 | Fifty Years of the Exact Solution of the Two-Dimensional Ising Model by
Onsager | The exact solution of the two-dimensional Ising model by Onsager in 1944
represents one of the landmarks in theoretical physics. On the occassion of the
fifty years of the exact solution, we give a historical review of this model.
After briefly discussing the exact solution by Onsager, we point out some of
the recent d... | 1995-11-01 | 2008-02-03 | [
"cond-mat",
"hep-th"
] | Somendra M. Bhattacharjee, and Avinash Khare |
cond-mat/9511002 | New Incommensurate Elongated-Triangle Phase in Quartz | We present for the first time the evidence for a thermodynamically stable
incommensurate elongated-triangle ($ELT$) phase in quartz observed by
transmission electron microscopy at structural $\alpha -\beta $ transition. The
phase sequence on cooling is: uniform $\beta $ phase - stripe incommensurate
phase (ferroelastic... | 1995-11-01 | 2008-02-03 | [
"cond-mat"
] | P. Saint-Gregoire, I. Luk'yanchuk, E.Snoeck, C.Roucau, V. Janovec
(GDPC, Univ. MontpellierII, France; Landau Inst. for Theor. Phys., Moscow;
CEMES-LOE, Toulouse, France; Univ. of Technology, Liberec Czech Republic) |
cond-mat/9511005 | Theory of Phonon-Assisted Multimagnon Optical Absorption and Bimagnon
States in Quantum Antiferromagnets | We calculate the effective charge for multimagnon infrared (IR) absorption
assisted by phonons in a perovskite like antiferromagnet and we compute the
spectra for two magnon absorption using interacting spin-wave theory. The full
set of equations for the interacting two magnon problem is presented in the
random phase a... | 1995-11-01 | 2008-06-16 | [
"cond-mat"
] | J. Lorenzana and G. A. Sawatzky |
cond-mat/9510169 | A unified approach to electron transport in double barrier structures | In this paper we show an approach to electron transport in double barrier
structures which unifies the well known sequential and resonant tunneling
models in the widest range of transport regimes, from completely coherent to
completely incoherent. In doing so, we make a clear distinction between
``approaches'' and ``tr... | 1995-10-31 | 2009-10-28 | [
"cond-mat"
] | Giuseppe Iannaccone and Bruno Pellegrini |
cond-mat/9510168 | Single Particle Hopping Between Luttinger Liquids: A Spectral Function
Approach | We present a pedagogical account of our approach to the problem of Luttinger
liquids coupled by interliquid single particle hopping. It is shown that the
key issue is that of coherence/incoherence of interliquid hopping, and not of
relevance/irrelevance in a renormalization group sense. A clear signal of
coherence, pre... | 1995-10-31 | 2007-05-23 | [
"cond-mat"
] | David Clarke and Steven Strong |
cond-mat/9510167 | Vortex reflection at boundaries of Josephson-junction arrays | We study the propagation properties of a single vortex in square
Josephson-junction arrays (JJA) with free boundaries and subject to an applied
dc current. We model the dynamics of the JJA by the resistively and
capacitively shunted junction (RCSJ) equations. For zero Stewart-McCumber
parameter $\beta_c$ we find that t... | 1995-10-31 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | T.J. Hagenaars, J.E. van Himbergen, Jorge V. Jose, and P.H.E. Tiesinga |
cond-mat/9510170 | Dynamic Scaling of Width Distribution in Edwards--Wilkinson Type Models
of Interface Dynamics | Edwards--Wilkinson type models are studied in 1+1 dimensions and the
time-dependent distribution, P_L(w^2,t), of the square of the width of an
interface, w^2, is calculated for systems of size L. We find that, using a flat
interface as an initial condition, P_L(w^2,t) can be calculated exactly and it
obeys scaling in t... | 1995-10-31 | 2009-10-28 | [
"cond-mat"
] | T. Antal and Z. Racz (Eotvos U.) |
cond-mat/9510162 | Corrections to scaling in 2--dimensional polymer statistics | Writing $<R^2_N > = AN^{2\nu}(1+BN^{-\Delta_1}+CN^{-1}+ ...)$ for the mean
square end--to--end length $<R^2_N>$ of a self--avoiding polymer chain of $N$
links, we have calculated $\Delta_1$ for the two--dimensional {\em continuum}
case from a new {\em finite} perturbation method based on the ground state of
Edwards sel... | 1995-10-30 | 2009-10-28 | [
"cond-mat",
"chem-ph"
] | S. R. Shannon, T. C. Choy, and R. J. Fleming (Department of Physics,
Monash University, Clayton, Victoria. Australia) |
cond-mat/9510163 | Skyrmion Liquid in SU(2)-invariant Quantum Hall Systems | We report on a theory of the Skyrmion states which occur in quantum Hall
regime near certain filling factors. It is shown that in the limit of zero
Zeeman splitting in a realistic temperature range the Skyrmion plasma is a
liquid described by the effective model of massive two-dimensional Dirac
fermions. | 1995-10-30 | 2009-10-28 | [
"cond-mat"
] | A. G. Green, I. I. Kogan and A. M. Tsvelik |
cond-mat/9510165 | First-Principles Studies of Hydrogenated Si(111)--7$\times$7 | The relaxed geometries and electronic properties of the hydrogenated phases
of the Si(111)-7$\times$7 surface are studied using first-principles molecular
dynamics. A monohydride phase, with one H per dangling bond adsorbed on the
bare surface is found to be energetically favorable. Another phase where 43
hydrogens sat... | 1995-10-30 | 2009-10-28 | [
"cond-mat"
] | D.R. Alfonso, C. Noguez, D.A. Drabold and S.E. Ulloa (Ohio University) |
cond-mat/9510166 | Fermi edge restoration in the Tomonaga-Luttinger model with impurities | We study the Tomonaga-Luttinger model in the presence of magnetic
(Kondo-like) impurities. By using a recently proposed field-theoretical
approach to non-local bosonization we obtain the effective action describing
the low-energy charge and spin density fluctuations. From this action the
dispersion relations of the col... | 1995-10-30 | 2007-05-23 | [
"cond-mat"
] | C.M.Na\'on, M.C.von Reichenbach and M.L.Trobo |
cond-mat/9510164 | Three-dimensional disordered conductors in a strong magnetic field:
surface states and quantum Hall plateaus | We study localization in layered, three-dimensional conductors in strong
magnetic fields. We demonstrate the existence of three phases - insulator,
metal and quantized Hall conductor - in the two-dimensional parameter space
obtained by varying the Fermi energy and the interlayer coupling strength.
Transport in the quan... | 1995-10-30 | 2011-08-05 | [
"cond-mat"
] | J.T. Chalker (Theoretical Physics, Univ. of Oxford), A. Dohmen (Inst.
f. Theor. Phys., Univ. zu Koln) |
cond-mat/9510160 | Spin Gap of Two-Dimensional Antiferromagnet Representing CaV$_4$O$_9$ | We examined a two-dimensional Heisenberg model with two kinds of exchange
energies, $J_e$ and $J_c$. This model describes localized spins at vanadium
ions in a layer of CaV$_4$O$_9$, for which a spin gap is found by a recent
experiment. Comparing the high temperature expansion of the magnetic
susceptibility to experime... | 1995-10-29 | 2009-10-28 | [
"cond-mat"
] | Kazuhiro Sano and Ken'ichi Takano |
cond-mat/9510161 | Interacting dimers on the honeycomb lattice: An exact solution of the
five-vertex model | The problem of close-packed dimers on the honeycomb lattice was solved by
Kasteleyn in 1963. Here we extend the solution to include interactions between
neighboring dimers in two spatial lattice directions. The solution is obtained
by using the method of Bethe ansatz and by converting the dimer problem into a
five-vert... | 1995-10-29 | 2015-06-25 | [
"cond-mat"
] | H. Y. Huang, F. Y. Wu, H. Kunz and D. Kim |
cond-mat/9510159 | Charge Disorder in Granular Metallic Films | It is shown that practically any physically relevant random distribution of
offset charges destroys the Kosterlitz-Thouless-Berezinskii charge-unbinding
phase transition in two dimensional normal and superconducting granular arrays
and films. The array conductance obeys the Arrenius dependence on temperature.
Offset ch... | 1995-10-28 | 2007-05-23 | [
"cond-mat"
] | S.V. Panyukov and A.D. Zaikin |
cond-mat/9510158 | Persistent currents in coupled mesoscopic rings | We have analysed the nature of persistent currents in open coupled mesoscopic
rings. Our system is comprised of two ideal loops connected to an electron
reservoir. We have obtained analytical expressions for the persistent current
densities in two rings in the presence of a magnetic field. We show that the
known even-o... | 1995-10-27 | 2009-10-28 | [
"cond-mat"
] | T. P. Pareek and A. M. Jayannavar |
cond-mat/9510153 | Diamagnetic Response of Normal-metal -- Superconductor Double Layers | The magnetic response of a proximity-coupled superconductor-normal metal
sandwich is studied within the framework of the quasiclassical theory. The
magnetization is evaluated for finite values of the applied magnetic field
(linear and nonlinear response) at arbitrary temperatures and is used to fit
recent experimental ... | 1995-10-27 | 2009-10-28 | [
"cond-mat"
] | W. Belzig, C. Bruder, and Gerd Sch\"on |
cond-mat/9510152 | Surface Critical Phenomena and Scaling in the Eight-Vertex Model | We give a physical interpretation of the entries of the reflection
$K$-matrices of Baxter's eight-vertex model in terms of an Ising interaction at
an open boundary. Although the model still defies an exact solution we
nevertheless obtain the exact surface free energy from a crossing-unitarity
relation. The singular par... | 1995-10-27 | 2009-01-23 | [
"cond-mat",
"hep-th"
] | M. T. Batchelor and Y. K. Zhou |
cond-mat/9510154 | Power-law Distributions in the Kauffman Net | Kauffman net is a dynamical system of logical variables receiving two random
inputs and each randomly assigned a boolean function. We show that the
attractor and transient lengths exhibit scaleless behavior with power-law
distributions over up to ten orders of magnitude. Our results provide evidence
for the existence o... | 1995-10-27 | 2007-05-23 | [
"cond-mat"
] | Amartya Bhattacharjya and Shoudan Liang |
cond-mat/9510155 | Lattice Dynamics of II-VI materials using adiabatic bond charge model | We extend the adiabatic bond charge model, originally developed for group IV
semiconductors and III-V compounds, to study phonons in more ionic II-VI
compounds with a zincblende structure. Phonon spectra, density of states and
specific heats are calculated for six II-VI compounds and compared with both
experimental dat... | 1995-10-27 | 2009-10-28 | [
"cond-mat"
] | B. D. Rajput and D. A. Browne (Louisiana State University) |
cond-mat/9510157 | Interface States in Stressed Semiconductor Heterojunction with
Antiferromagnetic Ordering | The stressed heterojunctions with antiferromagnetic ordering in which the
constituents have oppposite band edge symmetry and their gaps have opposite
signs have been investigated. The interface states have been shown to appear in
these heterojunctions and they are spin-split. As a result if the Fermi level
gets into on... | 1995-10-27 | 2007-05-23 | [
"cond-mat"
] | V. G. Kantser, N. M. Malkova |
cond-mat/9510151 | The transition from an ordered antiferromagnet to a quantum disordered
spin liquid in a solvable bilayer model | We present a spin-1/2 bilayer model for the quantum order-disorder transition
which (i) can be solved by mean-field theory for bulk quantities, (ii) becomes
critical at the transition, and (iii) allows to include intralayer frustration.
We present numerical data (for systems with up to 240 sites) and analytical
results... | 1995-10-26 | 2009-10-28 | [
"cond-mat"
] | C. Gros, W. Wenzel and J. Richter |
cond-mat/9510150 | Properties of lightly doped t-J two-leg ladders | We have numerically investigated the doped t-J ladder using exact
diagonalization. We have studied both the limit of strong inter-chain coupling
and isotropic coupling. The ladder scales to the Luther-Emery liquid regime in
the strong inter-chain coupling limit. In this strong coupling limit there is a
simple picture o... | 1995-10-26 | 2007-05-23 | [
"cond-mat"
] | Matthias Troyer, Hirokazu Tsunetsugu and T. M. Rice |
cond-mat/9510147 | Cooperative Jahn-Teller Effect and Electron-Phonon Coupling in
$La_{1-x}A_xMnO_3$ | A classical model for the lattice distortions of $\lax$ is derived and, in a
mean field approximation, solved. The model is based on previous work by
Kanamori and involves localized Mn d-electrons (which induce tetragonal
distortions of the oxygen octahedra surrounding the Mn) and localized holes
(which induce breathin... | 1995-10-25 | 2009-10-28 | [
"cond-mat"
] | A. J. Millis |
cond-mat/9510142 | Bosons in anisotropic traps: ground state and vortices | We solve the Gross-Pitaevskii equations for a dilute atomic gas in a magnetic
trap, modeled by an anisotropic harmonic potential. We evaluate the wave
function and the energy of the Bose Einstein condensate as a function of the
particle number, both for positive and negative scattering length. The results
for the trans... | 1995-10-25 | 2009-10-28 | [
"cond-mat"
] | F. Dalfovo and S. Stringari |
cond-mat/9510145 | Theory of the Anderson impurity model: The Schrieffer--Wolff
transformation re--examined | We apply the method of infinitesimal unitary transformations recently
introduced by Wegner to the Anderson single impurity model. It is demonstrated
that this method provides a good approximation scheme for all values of the
on-site interaction $U$, it becomes exact for $U=0$. We are able to treat an
arbitrary density ... | 1995-10-25 | 2009-10-28 | [
"cond-mat"
] | Stefan K. Kehrein and Andreas Mielke (Institut fuer Theoretische
Physik, Ruprecht--Karls--Universitaet, Heidelberg, F.R. Germany) |
cond-mat/9510149 | The phase diagram of the anisotropic Spin-1 Heisenberg Chain | We applied the Density Matrix Renormalization Group to the XXZ spin-1 quantum
chain. In studing this model we aim to clarify controversials about the point
where the massive Haldane phase appears. | 1995-10-25 | 2009-10-28 | [
"cond-mat"
] | A. L. Malvezzi and F. C. Alcaraz |
cond-mat/9510141 | A fractal model for the first stages of thin film growth | In this paper we briefly review a model that describes the
diffusion-controlled aggregation exhibited by particles as they are deposited
on a surface. This model allows to understand many experiments of thin film
deposition. In the first part, we describe the model, which incorporates
deposition, particle and cluster d... | 1995-10-25 | 2007-05-23 | [
"cond-mat",
"mtrl-th"
] | Pablo Jensen, Albert-L\'aszl\'o Barab\'asi, Hern\'an Larralde, Shlomo
Havlin and H. Eugene~Stanley |
cond-mat/9510140 | Giant Josephson current through a single bound state in a
superconducting tunnel junction | We study the microscopic structure of the Josephson current in a single-mode
tunnel junction with a wide quasiclassical tunnel barrier. In such a junction
each Andreev bound state carries a current of magnitude proportional to the
{\em amplitude} of the normal electron transmission through the junction.
Tremendous enha... | 1995-10-25 | 2009-10-28 | [
"cond-mat"
] | G. Wendin and V. S. Shumeiko (Chalmers University of Technology) |
cond-mat/9510143 | Diffusion Monte Carlo study of two-dimensional liquid $^4$He | The ground-state properties of two-dimensional liquid $^4$He at zero
temperature are studied by means of a quadratic diffusion Monte Carlo method.
As interatomic potential we use a revised version of the HFDHE2 Aziz potential
which is expected to give a better description of the interaction between
helium atoms. The eq... | 1995-10-25 | 2009-10-28 | [
"cond-mat"
] | S. Giorgini, J. Boronat and J. Casulleras |
cond-mat/9510144 | Spin Stiffness in the Hubbard model | The spin stiffness $\rho_{\rm s}$ of the repulsive Hubbard model that occurs
in the hydrodynamic theory of antiferromagnetic spin waves is shown to be the
same as the thermodynamically defined stiffness involved in twisting the order
parameter. New expressions for $\rho_{\rm s}$ are derived, which enable easier
interpr... | 1995-10-25 | 2009-10-28 | [
"cond-mat"
] | J.M.J. van Leeuwen, M.S.L. du Croo de Jongh and P.J.H. Denteneer |
cond-mat/9510148 | First Principles LCGO Calculation of the Magneto-optical Properties of
Nickel and Iron | We report a first principles, self-consistent, all electron, linear
combination of Gaussian orbitals (LCGO) calculation of a comprehensive
collection of magneto-optical properties of nickel and iron based on density
functional theory. Among the many magneto-optical effects, we have studied the
equatorial Kerr effect fo... | 1995-10-25 | 2009-10-28 | [
"cond-mat"
] | Neeraj Mainkar, D. A. Browne and J. Callaway |
cond-mat/9510136 | Phase diagram of quantum dissipative junctions | Mesoscopic capacitances, in the quantum regime, are described as a quantum
rotor coupled to a dissipative bath. We analyze the phase diagram of this
model, as function of the capacitance, the coupling to the bath (that is, the
conductance of the device), and the decay of the correlation functions in the
bath, i.\ e., t... | 1995-10-24 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | T. Strohm and F. Guinea |
cond-mat/9510139 | Hole motion in the Ising antiferromagnet: an application of the
recursion method | We study hole motion in the Ising antiferromagnet using the recursion method.
Using the retraceable path approximation we find the hole's Green's function as
well as its wavefunction for arbitrary values of $t/J_z$. The effect of small
transverse interaction also is taken into account. Our results provide some
addition... | 1995-10-24 | 2009-10-28 | [
"cond-mat"
] | Oleg A. Starykh and George F. Reiter |
cond-mat/9510138 | Polarized interacting exciton gas in quantum wells and bulk
semiconductors | We develop a theory to calculate exciton binding energies of both two- and
three-dimensional spin polarized exciton gases within a mean field approach.
Our method allows the analysis of recent experiments showing the importance of
the polarization and intensity of the excitation light on the exciton
luminescence of GaA... | 1995-10-24 | 2019-08-15 | [
"cond-mat"
] | J.Fern\'andez-Rossier, C.Tejedor, L.Mu\~noz and L.Vi\~na |
cond-mat/9510137 | Closing probabilities in the Kauffman model: an annealed computation | We define a probabilistic scheme to compute the distributions of periods,
transients and weigths of attraction basins in Kauffman networks. These
quantities are obtained in the framework of the annealed approximation, first
introduced by Derrida and Pomeau. Numerical results are in good agreement with
the computed valu... | 1995-10-24 | 2015-06-25 | [
"cond-mat"
] | U. Bastolla and G. Parisi |
cond-mat/9510129 | Quantizing Charged Magnetic Domain Walls: Strings on a Lattice | The discovery by Tranquada et al. of an ordered phase of charged domain walls
in the high-Tc cuprates leads us to consider the possible existence of a
quantum domain-wall liquid. We propose minimal models for the quantization, by
meandering fluctuations, of isolated charged domain walls. These correspond to
lattice str... | 1995-10-23 | 2009-10-28 | [
"cond-mat"
] | H. Eskes, R. Grimberg, W. van Saarloos and J. Zaanen, (Institute
Lorentz, Leiden University, Leiden, The Netherlands) |
cond-mat/9510131 | Self-consistent Born approximation for the hole motion in the three-band
model: a comparison with photoemission experiments | The dispersion relation of the single hole in the $CuO_2$ plane is calculated
in the self-consistent Born approximation for the three-band Hamiltonian. We
find that direct oxygen-oxygen hopping removes the strong anisotropy of the
hole spectrum around the band minima. Our results compare well with recent
photoemission ... | 1995-10-23 | 2009-10-28 | [
"cond-mat"
] | Oleg A. Starykh, Oziel F. de Alcantara Bonfim, George F. Reiter |
cond-mat/9510130 | Transitions in non-conserving models of Self-Organized Criticality | We investigate a random--neighbours version of the two dimensional
non-conserving earthquake model of Olami, Feder and Christensen [Phys. Rev.
Lett. {\bf 68}, 1244 (1992)]. We show both analytically and numerically that
criticality can be expected even in the presence of dissipation. As the
critical level of conservati... | 1995-10-23 | 2009-10-28 | [
"cond-mat"
] | Stefano Lise and Henrik Jeldtoft Jensen |
cond-mat/9510135 | Infrared conductivity of a d_{x^2-y^2}-wave superconductor with impurity
and spin-fluctuation scattering | Calculations are presented of the in-plane far-infrared conductivity of a
d_{x^2-y^2}-wave superconductor, incorporating elastic scattering due to
impurities and inelastic scattering due to spin fluctuations. The impurity
scattering is modeled by short-range potential scattering with arbitrary phase
shift, while scatte... | 1995-10-23 | 2009-10-28 | [
"cond-mat"
] | S. M. Quinlan, P. J. Hirschfeld and D. J. Scalapino |
cond-mat/9510134 | Multiscaling to Standard Scaling Crossover in the Bray-Humayun Model for
Phase Ordering Kinetics | The Bray-Humayun model for phase ordering dynamics is solved numerically in
one and two space dimensions with conserved and non conserved order parameter.
The scaling properties are analysed in detail finding the crossover from
multiscaling to standard scaling in the conserved case. Both in the
nonconserved case and in... | 1995-10-23 | 2009-10-28 | [
"cond-mat"
] | Claudio Castellano and Marco Zannetti |
cond-mat/9510127 | 1/f-noise in the Bak-Sneppen model | We calculate time correlation functions in the Bak-Sneppen model (Phys. Rev.
Lett. {\bf 71} 4083 (1993)), a model showing self-organised criticality. For a
random neighbour version of the model, analytical results are presented, while
on a one dimensional lattice we give numerical results. The power spectrum of
these c... | 1995-10-23 | 2009-10-28 | [
"cond-mat"
] | F.Daerden and C.Vanderzande |
cond-mat/9510133 | A First-Landau-Level Laughlin/Jain Wave Function for the Fractional
Quantum Hall Effect | We show that the introduction of a more general closed-shell operator allows
one to extend Laughlin's wave function to account for the richer hierarchies
(1/3, 2/5, 3/7 ...; 1/5, 2/9, 3/13, ..., etc.) found experimentally. The
construction identifies the special hierarchy states with condensates of
correlated electron ... | 1995-10-23 | 2009-01-23 | [
"cond-mat",
"nucl-th"
] | Joe Ginocchio (Los Alamos), Wick Haxton (Univ. Washington) |
cond-mat/9510128 | Vortex Structure Around a Magnetic Dot in Planar Superconductors | The problem of the giant vortex state around a magnetic dot which is embedded
in a superconducting film is investigated. The full non-linear, self-consistent
Ginzburg-Landau equations are solved numerically in order to calculate the free
energy, the order parameter of the host superconductor, the internal magnetic
fiel... | 1995-10-23 | 2009-10-28 | [
"cond-mat"
] | I. K.Marmorkos, A. Matulis, and F. M. Peeters |
cond-mat/9510132 | Spin Singlet Ordering Suggested by Repulsive Interactions | We consider a correlated wavefunction including particle-hole pairing at half
a reciprocal lattice vector for itinerant electrons hopping on a square lattice
in two dimensions and subject both to on-site and nearest-neighbor repulsion.
We find, within mean field theory, that in a suitable range of parameters there
is a... | 1995-10-23 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | Chetan Nayak and Frank Wilczek |
cond-mat/9510126 | Chaotic dynamics of electric-field domains in periodically driven
superlattices | Self-sustained time-dependent current oscillations under dc voltage bias have
been observed in recent experiments on n-doped semiconductor superlattices with
sequential resonant tunneling. The current oscillations are caused by the
motion and recycling of the domain wall separating low- and high-electric-
field regions... | 1995-10-22 | 2009-10-28 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | O.M. Bulashenko, M.J. Garcia, and L.L. Bonilla (Universidad Carlos III
de Madrid) |
cond-mat/9510125 | Generation of spin-polarized currents in Zeeman-split Tomonaga-Luttinger
models | In a magnetic field an interacting electron gas in one dimension may be
described as a Tomonaga-Luttinger model comprising two components with
different Fermi velocities due to the Zeeman splitting. This destroys the
spin-charge separation, and even the quantities such as the density-density
correlation involve spin an... | 1995-10-21 | 2009-10-28 | [
"cond-mat"
] | Takashi Kimura, Kazuhiko Kuroki, and Hideo Aoki |
cond-mat/9510122 | Integer quantum Hall effect for hard-core bosons and a failure of
bosonic Chern-Simons mean-field theories for electrons at half-filled Landau
level | Field-theoretical methods have been shown to be useful in constructing simple
effective theories for two-dimensional (2D) systems. These effective theories
are usually studied by perturbing around a mean-field approximation, so the
question whether such an approximation is meaningful arises immediately. We
here study 2... | 1995-10-20 | 2009-10-28 | [
"cond-mat"
] | O. Heinonen, M.D. Johnson (Department of Physics, University of
Central Florida, Orlando, FL) |
cond-mat/9510115 | Critical Properties of the transition between the Haldane phase and the
large-D phase of the spin-1/2 ferromagnetic-antiferromagnetic Heisenberg
chain with on-site anisotropy" | We analytically study the ground-state quantum phase transition between the
Haldane phase and the large-$D$ (LD) phase of the $S=1/2$
ferromagnetic-antiferromagnetic alternating Heisenberg chain with on-site
anisotropy. We transform this model into a generalized version of the
alternating antiferromagnetic Heisenberg m... | 1995-10-20 | 2009-10-28 | [
"cond-mat"
] | Kiyomi Okamoto (Dept. Phys., Tokyo Inst. Tech., Tokyo, Japan) |
cond-mat/9510118 | Parametric Conductance Correlation for Irregularly Shaped Quantum Dots | We propose the autocorrelator of conductance peak heights as a signature of
the underlying chaotic dynamics in quantum dots in the Coulomb blockade regime.
This correlation function is directly accessible to experiments and its decay
width contains interesting information about the underlying electron dynamics.
Analyti... | 1995-10-20 | 2009-10-28 | [
"cond-mat"
] | Henrik Bruus, Caio H. Lewenkopf, and Eduardo R. Mucciolo |
cond-mat/9510120 | Superconducting pairing of spin polarons in the t-J model | The pairing of quasiparticles in a CuO$_2$ plane is studied within a spin
polaron formulation of the $t$-$t^{'}$-$J$ model. Our numerical solution of the
Eliashberg equations unambiguously shows d-wave pairing between spin polarons
on different sublattices mediated by the exchange of spin-fluctuations, and a
strong dop... | 1995-10-20 | 2009-10-28 | [
"cond-mat"
] | N.M. Plakida, V.S. Oudovenko, P. Horsch and A.I. Liechtenstein (Joint
Institute for Nuclear Research, Dubna, Russia; Max-Planck Institut fur
Festkorperforschung, Stuttgart) |
cond-mat/9510114 | Dimer Correlarions in Spin-1/2 Alternating XY Chain | We investigate the long-distance asymptotic behavior of the dimer
correlations in the spin-1/2 alternating $XY$chain both at T=0 and at
sufficiently low-temperatures. The correlations consist of the dimer long-range
order part and the exponentially decaying one. Although the dimer long-range
order takes the different v... | 1995-10-20 | 2007-05-23 | [
"cond-mat"
] | Yohei Saika and Kiyomi Okamoto |
cond-mat/9510124 | The Critical Behaviour of Potts models with symmetry breaking fields | The $Q$-state Potts model in two dimensions in the presence of external
magnetic fields is studied. For general $Q\geq3$ special choices of these
magnetic fields produce effective models with smaller $Z(Q')$ symmetry $(Q'<
Q)$. The phase diagram of these models and their critical behaviour are
explored by conventional ... | 1995-10-20 | 2009-10-28 | [
"cond-mat"
] | F. C. Alcaraz and J. C. Xavier |
cond-mat/9510119 | Zero and Finite Temperature Phase Diagram of the Spinless Fermion Model
in Infinite Dimensions | The phase diagram of the model of spinless fermions with repulsive nearest
neighbour interaction is calculated analytically on a hypercubic lattice in
infinite dimensions $(d\to \infty)$. In spite of its simplicity the model
displays a rich phase diagram depending on the doping $\delta$, the interaction
$U$ and the tem... | 1995-10-20 | 2009-10-28 | [
"cond-mat"
] | G.S. Uhrig and R. Vlaming |
cond-mat/9510116 | Combinatorial Approach to the Ground-State Energy of Square and
Triangular +/- J Spin Glasses | A new combinatorial, analytical approach to the ground-state energy problem
of spin glasses with different concentrations of +/- J interactions is
developed. The energy e_0 is expressed in terms of the fraction of broken bonds
mu_0 and expanded into a fast converging series of the average length of a
segment between tw... | 1995-10-20 | 2007-05-23 | [
"cond-mat"
] | P. Polaszek (Inst. f. Theor. Phys., TU Dresden, Germany) |
cond-mat/9510121 | Effective $\sigma$ Model Formulation for Two Interacting Electrons in a
Disordered Metal | We derive an analytical theory for two interacting electrons in a
$d$--dimensional random potential. Our treatment is based on an effective
random matrix Hamiltonian. After mapping the problem on a nonlinear $\sigma$
model, we exploit similarities with the theory of disordered metals to identify
a scaling parameter, in... | 1995-10-20 | 2009-10-28 | [
"cond-mat"
] | Klaus Frahm, Axel M"uller--Groeling and Jean-Louis Pichard |
cond-mat/9510117 | Resonant Andreev Scattering In Phase-Coherent, Superconducting
Nanostructures | Analytic predictions for resonant transport in three generic structures are
presented. For a structure comprising a normal (N) contact - normal dot (NDOT)
- superconducting (S) contact, we predict that finite voltage, differential
conductance resonances are destroyed by the switching on of superconductivity
in the S-co... | 1995-10-20 | 2007-05-23 | [
"cond-mat"
] | N.R. Claughton, M. Leadbeater, C.J. Lambert and V.N. Prigodin |
cond-mat/9510123 | How Accurate Must Potentials Be for Successful Modeling of Protein
Folding? | Protein sequences are believed to have been selected to provide the stability
of, and reliable renaturation to, an encoded unique spatial fold. In recently
proposed theoretical schemes, this selection is modeled as ``minimal
frustration,'' or ``optimal energy'' of the desirable target conformation over
all possible seq... | 1995-10-20 | 2009-10-28 | [
"cond-mat",
"chem-ph",
"q-bio"
] | Vijay S. Pande, Alexander Yu. Grosberg, Toyoichi Tanaka |
cond-mat/9510107 | On the Quantum Kinetic Equation in Weak Turbulence | The quantum kinetic equation used in the study of weak turbulence is
reconsidered in the context of a theory with a generic quartic interaction. The
expectation value of the time derivative of the mode number operators is
computed in a perturbation expansion which places the large diagonal component
of the quartic term... | 1995-10-19 | 2009-10-28 | [
"cond-mat"
] | Mark Rakowski and Siddhartha Sen |
cond-mat/9510106 | Numerical renormalization group study of the 1D t-J model | The one-dimensional (1D) $t-J$ model is investigated using the density matrix
renormalization group (DMRG) method. We report for the first time a
generalization of the DMRG method to the case of arbitrary band filling and
prove a theorem with respect to the reduced density matrix that accelerates the
numerical computat... | 1995-10-19 | 2009-10-28 | [
"cond-mat"
] | Liang Chen and S. Moukouri (Sherbrooke University, Canada) |
cond-mat/9510109 | Determination of the Critical Point and Exponents from short-time
Dynamics | The dynamic process for the two dimensional three state Potts model in the
critical domain is simulated by the Monte Carlo method. It is shown that the
critical point can rigorously be located from the universal short-time
behaviour. This makes it possible to investigate critical dynamics
independently of the equilibri... | 1995-10-19 | 2009-10-28 | [
"cond-mat"
] | L. Schuelke, and B. Zheng |
cond-mat/9510104 | On Matrix Product Ground States for Reaction-Diffusion Models | We discuss a new mechanism leading to a matrix product form for the
stationary state of one-dimensional stochastic models. The corresponding
algebra is quadratic and involves four different matrices. For the example of a
coagulation-decoagulation model explicit four-dimensional representations are
given and exact expre... | 1995-10-19 | 2009-10-28 | [
"cond-mat"
] | Haye Hinrichsen, Sven Sandow and Ingo Peschel |
cond-mat/9510102 | Dendritic growth at very low undercoolings | We have performed numerical simulations of dendritic growth at very low
undercoolings in two spatial dimension using a phase-field model. In this
regime of growth, the dendrites present sharp corners in the tip region while
the trailing region is parabolic, and the corresponding side-branching
structures resemble the s... | 1995-10-19 | 2009-10-28 | [
"cond-mat"
] | Jose-Luis Mozos and Hong Guo |
cond-mat/9510103 | Exciton effects and nonlinear optical response in soliton lattice states
of doped conjugated polymers | Exciton effects on conjugated polymers are investigated in the soliton
lattice system. We use the Su-Schrieffer-Heeger model with long-range Coulomb
interactions treated by the single-excitation configuration-interaction method.
The soliton band is present in the Peierls gap of the doped system. There
appears a new kin... | 1995-10-19 | 2008-02-03 | [
"cond-mat",
"chem-ph",
"mtrl-th"
] | Kikuo Harigaya, Yukihiro Shimoi, and Shuji Abe (ETL) |
cond-mat/9510110 | Pinning of a solid--liquid--vapour interface by stripes of obstacles | We use a macroscopic Hamiltonian approach to study the pinning of a
solid--liquid--vapour contact line on an array of equidistant stripes of
obstacles perpendicular to the liquid. We propose an estimate of the density of
pinning stripes for which collective pinning of the contact line happens. This
estimate is shown to... | 1995-10-19 | 2009-10-28 | [
"cond-mat"
] | J. V. Andersen and Y. Brechet |
cond-mat/9510111 | Parametric Generation of Second Sound by First Sound in Superfluid
Helium | We report the first experimental observation of parametric generation of
second sound (SS) by first sound (FS) in superfluid helium in a narrow
temperature range in the vicinity of $T_\lambda $. The temperature dependence
of the threshold FS amplitude is found to be in a good quantitative agreement
with the theory sugg... | 1995-10-19 | 2016-08-31 | [
"cond-mat",
"nlin.PS",
"patt-sol"
] | Dmitry Rinberg, Vladimir Cherepanov, and Victor Steinberg |
cond-mat/9510105 | Exactly solvable extended Hubbard model | In this work, we introduce long range version of the extended Hubbard model.
The system is defined on a non-uniform lattice. We show that the system is
integrable. The ground state, the ground state energies, the energy spectrum
are also found for the system. Another long range version of the extended
Hubbard model is ... | 1995-10-19 | 2009-10-28 | [
"cond-mat"
] | D. F. Wang |
cond-mat/9510101 | Critical activity of the hard-sphere lattice gas on the body-centred
cubic lattice | This is the first Monte Carlo study of the hard-sphere lattice gas with
nearest neighbour exclusion on the body-centred cubic lattice. We estimate the
critical activity to be $0.7223 \pm 0.0003$. This result confirms that there is
a re-entrant phase transition of an antiferromagnetic Ising model in an
external field an... | 1995-10-19 | 2015-06-25 | [
"cond-mat"
] | Atsushi Yamagata |
cond-mat/9510112 | Phase Diagram of the 1D Anderson Lattice | We map out the phase diagram of the one--dimensional Anderson lattice by
studying the ground state magnetization as a function of band--filling using
the density matrix renormalization group technique. For strong coupling, we
find that the quarter--filled system has an S=0 ground state with strong
antiferromagnetic cor... | 1995-10-19 | 2009-10-28 | [
"cond-mat"
] | M. Guerrero and R. M. Noack |
cond-mat/9510113 | Evidence for charge-flux duality near the quantum Hall liquid to
insulator transition | We examine the longitudinal, non-linear, current-voltage characteristics near
the quantum Hall liquid to insulator transition and show that a simple mapping
exists between the characteristics on the quantum Hall side and those on the
insulating side of the transition. More precisely, at filling factors related
by the l... | 1995-10-19 | 2009-10-28 | [
"cond-mat"
] | D. Shahar, D.C. Tsui, M. Shayegan, E. Shimshoni, S.L. Sondhi |
cond-mat/9510108 | Is surface melting a surface phase transition? | Monte Carlo or Molecular Dynamics calculations of surfaces of Lennard-Jones
systems often indicate, apart from a gradual disordering of the surface called
surface melting, the presence of a phase transition at the surface, but cannot
determine the nature of the transition. In the present paper, we provide for a
link be... | 1995-10-19 | 2009-10-28 | [
"cond-mat",
"chem-ph"
] | Paul J.M. Bastiaansen and Hubert J.F. Knops (University of Nijmegen,
The Netherlands) |
cond-mat/9510096 | Zero field muon spin lattice relaxation rate in a Heisenberg ferromagnet
at low temperature | We provide a theoretical framework to compute the zero field muon spin
relaxation rate of a Heisenberg ferromagnet at low temperature. We use the
linear spin wave approximation. The rate, which is a measure of the spin
lattice relaxation induced by the magnetic fluctuations along the easy axis,
allows one to estimate t... | 1995-10-18 | 2009-10-28 | [
"cond-mat"
] | P. Dalmas de Reotier and A. Yaouanc, (Commissariat a l'Energie
Atomique, Grenoble, France) |
cond-mat/9510100 | Antiferromagnetic Excitations and Van Hove Singularities in
YBa$_2$Cu$_3$O$_{6+x}$ | We show that in quasi-two-dimensional $d$-wave superconductors Van Hove
singularities close to the Fermi surface lead to novel magnetic quasi-particle
excitations. We calculate the temperature and doping dependence of dynamical
magnetic susceptibility for YBCO and show that the proposed excitations are in
agreement wit... | 1995-10-18 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | G. Blumberg, Branko P. Stojkovic, M. V. Klein |
cond-mat/9510099 | Nonuniversal Critical Spreading in Two Dimensions | Continuous phase transitions are studied in a two dimensional nonequilibrium
model with an infinite number of absorbing configurations. Spreading from a
localized source is characterized by nonuniversal critical exponents, which
vary continuously with the density phi in the surrounding region. The exponent
delta change... | 1995-10-18 | 2009-10-28 | [
"cond-mat"
] | Ronald Dickman |
cond-mat/9510097 | Simulations of the Velocity Dependence of the Friction Force | The motion of an elastic body over a rough surface is simulated in one
dimension using Newtonian dynamics. We drive the body by prescribing a constant
velocity. We extract the friction force from the work done by the applied force
in order to maintain the motion of the body. A positive amount of work is
needed because ... | 1995-10-18 | 2008-02-03 | [
"cond-mat"
] | Nathan A. Lindop and Henrik Jeldoft Jensen (Imperial College, London) |
cond-mat/9510095 | Metamagnetism and Fermi Surface in the Anderson Lattice Model | We investigate magnetization as functions of external magnetic field $H$ in
the $U$-infinite Anderson lattice model within the leading order approximation
in the $1/N$-expansion. At $T=0$, at $H=H_M$ where the Zeeman energy is equal
to a certain characteristic energy in the system, the magnetization curve has a
kink an... | 1995-10-18 | 2009-10-28 | [
"cond-mat"
] | Yoshiaki Ono |
cond-mat/9510098 | Real-Time Dynamics from Imaginary-Time Quantum Monte Carlo Simulations:
Tests on Oscillator Chains | We used methods of Bayesian statistical inference and the principle of
maximum entropy to analytically continue imaginary-time Green's function
generated in quantum Monte Carlo simulations to obtain the real-time Green's
functions. For test problems, we considered chains of harmonic and anharmonic
oscillators whose pro... | 1995-10-18 | 2009-10-28 | [
"cond-mat"
] | J. Bonca and J.E. Gubernatis |
cond-mat/9510091 | The Local Impurity Self Consistent Approximation (LISA) to Strongly
Correlated Fermion Systems and the Limit of Infinite Dimensions | We review the dynamical mean-field theory of strongly correlated fermion
systems which is based on a mapping of lattice models onto quantum impurity
models subject to a self-consistency condition. This mapping is exact in the
limit of large lattice coordination (or infinite spatial dimensions). This
method can be used ... | 1995-10-17 | 2007-05-23 | [
"cond-mat"
] | A. Georges, G. Kotliar, W. Krauth and M. J. Rozenberg |
cond-mat/9510094 | Dynamics of a heavy particle in a Luttinger liquid | We study the dynamics of a heavy particle of mass $M$ moving in a
one-dimensional repulsively interacting Fermi gas. The Fermi gas is described
using the Luttinger model and bosonization. By transforming to a frame
co-moving with the heavy particle, we map the model onto a generalized
``quantum impurity problem". A ren... | 1995-10-17 | 2009-10-28 | [
"cond-mat"
] | A.H.Castro Neto and Matthew P.A. Fisher |
cond-mat/9510093 | Front Propagation in the Pearling Instability of Tubular Vesicles | Recently Bar-Ziv and Moses discovered a dynamical shape transformation
induced in cylindrical lipid bilayer vesicles by the action of laser tweezers.
We develop a hydrodynamic theory of fluid bilayers in interaction with the
surrounding water and argue that the effect of the laser is to induce a sudden
tension in the m... | 1995-10-17 | 2009-10-28 | [
"cond-mat",
"nlin.PS",
"patt-sol"
] | R.E. Goldstein, P. Nelson, T. Powers, U. Seifert |
cond-mat/9510092 | Selection Rules for Transport Excitation Spectroscopy of Few-Electron
Quantum Dots | Tunneling of electrons traversing a few-electron quantum dot is strongly
influenced by the Coulomb interaction leading to Coulomb blockade effects and
single-electron tunneling. We present calculations which demonstrate that
correlations between the electrons cause a strong suppression of most of the
energetically allo... | 1995-10-17 | 2009-10-28 | [
"cond-mat"
] | Daniela Pfannkuche (Max-Planck Inst. - Stuttgart) and Sergio E. Ulloa
(Ohio University) |
cond-mat/9510090 | Universal Power Law in the Noise from a Crumpled Elastic Sheet | Using high-resolution digital recordings, we study the crackling sound
emitted from crumpled sheets of mylar as they are strained. These sheets
possess many of the qualitative features of traditional disordered systems
including frustration and discrete memory. The sound can be resolved into
discrete clicks, emitted du... | 1995-10-17 | 2009-10-28 | [
"cond-mat"
] | Eric M. Kramer, Alexander E. Lobkovsky (University of Chicago) |
cond-mat/9510087 | Ground-state properties of the One-dimensional Kondo Lattice at partial
Band-filling | We compute the magnetic structure factor, the singlet correlation function
and the momentum distribution of the one-dimensional Kondo lattice model at the
density $\rho =0.7$. The density matrix-renormalization group method is used.
We show that in the weak-coupling regime, the ground state is paramagnetic. We
argue th... | 1995-10-16 | 2009-10-28 | [
"cond-mat"
] | Samuel Moukouri and Laurent G. Caron |
cond-mat/9510085 | Fractional Exclusion Statistics and Two Dimensional Electron Systems | Using the Thomas-Fermi approximation, we show that an interacting two
dimensional electron gas may be described in terms of fractional exclusion
statistics at zero and finite temperatures when the interaction has a
short-range component. We argue that a likely physical situation for this
phenomenon to occur may exist i... | 1995-10-16 | 2009-10-28 | [
"cond-mat"
] | R.K.Bhaduri, M. V. N. Murthy and M.K.Srivastava (Department of
Physics, McMaster University, Hamilton, Canada) |
cond-mat/9510089 | Chiral Surface States in the Bulk Quantum Hall Effect | In layered samples which exhibit a bulk quantum Hall effect (QHE), a
two-dimensional (2d) surface ``sheath" of gapless excitations is expected.
These excitations comprise a novel 2d chiral quantum liquid which should
dominate the low temperature transport along the field (z-axis). For the
integer QHE, we show that loca... | 1995-10-16 | 2009-10-28 | [
"cond-mat"
] | Leon Balents and Matthew P. A. Fisher |
cond-mat/9510086 | Skyrmions and edge spin excitations in quantum Hall droplets | We present an analysis of spin-textures in Quantum Hall droplets, for filling
factors $\nu \simeq 1$. Analytical wavefunctions with well defined quantum
numbers are given for the low-lying states of the system which result to be
either bulk skyrmions or edge spin excitations. We compute dispersion relations
and study h... | 1995-10-16 | 2009-10-28 | [
"cond-mat"
] | J. H. Oaknin, L. Martin-Moreno and C. Tejedor |
cond-mat/9510088 | Gaussian field theories, random Cantor sets and multifractality | The computation of multifractal scaling properties associated with a critical
field theory involves non-local operators and remains an open problem using
conventional techniques of field theory. We propose a new description of
Gaussian field theories in terms of random Cantor sets and show how universal
multifractal sc... | 1995-10-16 | 2009-10-28 | [
"cond-mat",
"chao-dyn",
"hep-th",
"nlin.CD"
] | Claudio de C. Chamon, Christopher Mudry and Xiao-Gang Wen |
cond-mat/9510084 | Insulator-Metal Transition in the One and Two-Dimensional Hubbard Models | We use Quantum Monte Carlo methods to determine $T=0$ Green functions,
$G(\vec{r}, \omega)$, on lattices up to $16 \times 16$ for the 2D Hubbard model
at $U/t =4$. For chemical potentials, $\mu$, within the Hubbard gap, $ |\mu | <
\mu_c$, and at {\it long} distances, $\vec{r}$, $G(\vec{r}, \omega = \mu) \sim
e^{ -|\vec... | 1995-10-16 | 2009-10-28 | [
"cond-mat"
] | F.F. Assaad and M. Imada |
cond-mat/9510028 | Pair breaking by impurities in the two-dimensional t-J model | Pair breaking mechanisms by impurities are investigated in the
two-dimensional t-J model by exact diagonalization techniques. Analysis of
binding energies, pairing correlations, dynamical spin and pair
susceptibilities shows that non-magnetic impurities are more effective in
suppressing pairing than magnetic ones in ag... | 1995-10-15 | 2009-10-28 | [
"cond-mat"
] | J. Riera, S. Koval, D. Poilblanc and F. Pantigny |
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