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/9407078 | Twin-Boundary Pinning of Superconducting Vortex Arrays | We discuss the low-temperature dynamics of magnetic flux lines in
high-temperature superconductors in the presence of a family of parallel twin
planes that contain the $c$ axis. A current applied along the twin planes
drives flux motion in the direction transverse to the planes and acts like an
electric field applied t... | 1994-07-18 | 2009-10-22 | [
"cond-mat"
] | M.C. Marchetti and V.M. Vinokur |
cond-mat/9407077 | Antiferromagnetic and van Hove Scenarios for the Cuprates: Taking the
Best of Both Worlds | A theory for the high temperature superconductors is proposed. Holes are
spin-1/2, charge e, quasiparticles strongly dressed by spin fluctuations. Based
on their dispersion, it is claimed that the experimentally observed van Hove
singularities of the cuprates are likely originated by antiferromagnetic (AF)
correlations... | 1994-07-18 | 2009-10-22 | [
"cond-mat"
] | Elbio Dagotto, Alexander Nazarenko and Adriana Moreo |
cond-mat/9407076 | Glassy Solutions of the Kardar-Pasrisi-Zhang Equation | It is shown that the mode-coupling equations for the strong-coupling limit of
the KPZ equation have a solution for d>4 such that the dynamic exponent z is 2
(with possible logarithmic corrections) and that there is a delta function term
in the height correlation function <h(k,w)h^*(k,w)> = (A/k^{d+4-z})
\delta(w/k^z) w... | 1994-07-18 | 2009-10-22 | [
"cond-mat"
] | M.A. Moore, T. Blum J.P. Doherty, M. Marsili, J-P. Bouchaud and P.
Claudin |
cond-mat/9407075 | Transfer-matrix scaling from disorder-averaged correlation lengths for
diluted Ising systems | A transfer matrix scaling technique is developed for randomly diluted
systems, and applied to the site-diluted Ising model on a square lattice in two
dimensions. For each allowed disorder configuration between two adjacent
columns, the contribution of the respective transfer matrix to the decay of
correlations is consi... | 1994-07-18 | 2009-10-22 | [
"cond-mat"
] | S. L. A. de Queiroz and R. B. Stinchcombe |
cond-mat/9407079 | Novel Magnetic Properties of Carbon Nanotubes | An external magnetic field is found to have strong effects on the electronic
structure of carbon nanotubes. A field-induced metal-insulator transition is
predicted for all pure nanotubes. In a weak field, nanotubes exhibit both large
diamagnetic and paramagnetic responses which depend on the field direction, the
positi... | 1994-07-18 | 2009-10-22 | [
"cond-mat"
] | Jian Ping Lu |
cond-mat/9407073 | Oblique Confinement and Phase Transitions in Chern-Simons Gauge Theories | We investigate non-perturbative features of a planar Chern-Simons gauge
theory modeling the long distance physics of quantum Hall systems, including a
finite gap M for excitations. By formulating the model on a lattice, we
identify the relevant topological configurations and their interactions. For M
bigger than a crit... | 1994-07-16 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | M. C. Diamantini, P. Sodano, C. A. Trugenberger |
cond-mat/9407074 | On the contrasting spin dynamics of $La_{2-x}Sr_xCuO_4$,
$Nd_{2-x}Ce_xCuO_4$ and $YBa_2Cu_3O_{6+x}$ near half filling | We present simple calculations which show that incommensurability upon doping
and the width of the magnetically ordered phase in Mott-Hubbard insulators
depend strongly on the location of the hole/electron pockets in the Brillouin
zone. For $LaSrCuO$ systems, we found the pockets at $(\pm \pi/2,\pm \pi/2)$,
in which ca... | 1994-07-15 | 2009-10-22 | [
"cond-mat"
] | Andrey V. Chubukov and Karen A. Musaelian |
cond-mat/9407071 | Metallic screening and correlation effects in superconducting fullerenes | We consider the frequency dependent Coulomb interaction between electrons in
a molecular metal in the limit in which the conduction bandwidth is much less
than the plasma frequency, which in turn is much less than intramolecular
excitation energies. In particular, we compute the effective interactions at
the Fermi ener... | 1994-07-14 | 2009-10-22 | [
"cond-mat"
] | P.E. Lammert, D.S. Rokhsar, S. Chakravarty, S. Kivelson and M.I.
Salkola |
cond-mat/9407072 | Growth Kinetics in the $\Phi ^6$ N-Component Model. Conserved Order
Parameter | We extend the discussion of the growth kinetics of the large-N time-dependent
Ginzburg-Landau model with an order parameter described by a $\Phi^6$ free
energy functional, to the conserved case. Quenches from a high temperature
initial state to a zero temperature state are studied for different selections
of parameters... | 1994-07-14 | 2015-06-25 | [
"cond-mat"
] | F.Corberi and U.Marini.Bettolo Marconi |
cond-mat/9407069 | Surface wave scattering at nonuniform fluid interfaces | Effects of spatially varying interfacial parameters on the propagation of
surface waves are studied. These variations can arise from inhomogeneities in
coverage of surface active substances such as amphiphillic molecules at the
fluid/gas interface. Such variations often occur in phase coexistence regions
of Langmuir mo... | 1994-07-14 | 2009-10-22 | [
"cond-mat"
] | T. Chou and David R. Nelson |
cond-mat/9407066 | Three-dimensional effects on extended states in disordered models of
polymers | We study electronic transport properties of disordered polymers in the
presence of both uncorrelated and short-range correlated impurities. In our
procedure, the actual physical potential acting upon the electrons is replaced
by a set of nonlocal separable potentials, leading to a Schr\"odinger equation
that is exactly... | 1994-07-13 | 2009-10-22 | [
"cond-mat"
] | Francisco Dominguez-Adame, Enrique Diez, and Angel Sanchez |
cond-mat/9407058 | Shape Analysis of the Level Spacing Distribution around the Metal
Insulator Transition in the Three Dimensional Anderson Model | We present a new method for the numerical treatment of second order phase
transitions using the level spacing distribution function $P(s)$. We show that
the quantities introduced originally for the shape analysis of eigenvectors can
be properly applied for the description of the eigenvalues as well. The
position of the... | 1994-07-13 | 2009-10-22 | [
"cond-mat"
] | Imre Varga, Etienne Hofstetter, Michael Schreiber, and J\'anos Pipek |
cond-mat/9407062 | Superconducting to normal state phase boundary in arrays of ultrasmall
Josephson junctions | We study the competition between Josephson and charging energies in
two-dimensional arrays of ultrasmall Josephson junctions, when the mutual
capacitance is dominant over the self-capacitance. Our calculations involve a
combination of an analytic WKB renormalization group approach plus
nonperturbative Quantum Monte Car... | 1994-07-13 | 2016-08-14 | [
"cond-mat"
] | Jorge V. Jos\'e and Cristian Rojas |
cond-mat/9407068 | How do frustrations without disorder result in the spin-glass-like
behavior of the kagom\'{e} antiferromagnet? | Freezing of the classical spin liquid of the Heisenberg kagom\'{e}
antiferromagnet is studied. At low temperature, the coplanar spin
configurations are known to dominate among all possible three-dimensional
low-energy states because of the fluctuation interaction. It is shown that the
statistical weight of ${\bf q} =0$... | 1994-07-13 | 2007-05-23 | [
"cond-mat"
] | Vladimir Cherepanov |
cond-mat/9407060 | One Dimensional Nonequilibrium Kinetic Ising Models with Branching
Annihilating Random Walk | Nonequilibrium kinetic Ising models evolving under the competing effect of
spin flips at zero temperature and nearest neighbour spin exchanges at
$T=\infty$ are investigated numerically from the point of view of a phase
transition. Branching annihilating random walk of the ferromagnetic domain
boundaries determines the... | 1994-07-13 | 2009-10-22 | [
"cond-mat"
] | Nora Menyh\'ard |
cond-mat/9407064 | Large Phase Separation and Superconductivity in the Copper Oxide Chain | The phase diagram of the copper-oxide chain as a function of density and the
nearest-neighbour Coulomb interaction, V, is determined. Phase separation takes
place above a critical value of $V$ when the Cu2+ to Cu+ valence fluctuations
dominate. In the proximity of the phase separation boundary the superconducting
corre... | 1994-07-13 | 2007-05-23 | [
"cond-mat"
] | C. Vermeulen, W. Barford and E. R. Gagliano |
cond-mat/9407067 | Phase Separation and Superconductivity in the Copper Oxide Chain | The phase diagram of the copper-oxide chain as a function of density and the
nearest-neighbour Coulomb interaction, V, is determined. Phase separation takes
place above a critical value of $V$ when the Cu2+ to Cu+ valence fluctuations
dominate. In the proximity of the phase separation boundary the superconducting
corre... | 1994-07-13 | 2009-10-22 | [
"cond-mat"
] | C. Vermeulen, W. Barford and E. R. Gagliano |
cond-mat/9407059 | Anyonic Partition Functions and Windings of Planar Brownian Motion | The computation of the $N$-cycle brownian paths contribution $F_N(\alpha)$ to
the $N$-anyon partition function is adressed. A detailed numerical analysis
based on random walk on a lattice indicates that $F_N^{(0)}(\alpha)=
\prod_{k=1}^{N-1}(1-{N\over k}\alpha)$. In the paramount $3$-anyon case, one
can show that $F_3(\... | 1994-07-13 | 2009-10-22 | [
"cond-mat"
] | Jean DESBOIS, Christine HEINEMANN and St\'ephane OUVRY (Division de
Physique Th\'eorique, IPN, Orsay Fr-91406) |
cond-mat/9407063 | Solid--on--Solid Model for Adsorption on Self--Affine Substrate: A
Transfer Matrix Approach | We study a $d=2$ discrete solid--on--solid model of complete wetting of a
rough substrate with random self--affine boundary, having roughness exponent
$\zeta_s$. A suitable transfer matrix approach allows to discuss adsorption
isotherms, as well as geometrical and thermal fluctuations of the interface.
For $\zeta_s\leq... | 1994-07-13 | 2009-10-22 | [
"cond-mat"
] | G. Giugliarelli and A.L. Stella (Dipartimento di Fisica, Universita'
di Udine, Via delle Scienze 208, 33100 Udine, Italy) |
cond-mat/9407061 | Low-Temperature Behavior of the Large-U Hubbard Model from
High-Temperature Expansions | We derive low-temperature properties of the large-U Hubbard model in two and
three dimensions from exact series-expansion results for high temperatures.
Convergence problems and limited available information prevent a direct or
Pade'-type extrapolation. We propose a new method of extrapolation, which is
restricted to l... | 1994-07-13 | 2009-10-22 | [
"cond-mat"
] | D.F.B. ten Haaf, P.W. Brouwer, P.J.H. Denteneer, and J.M.J. van
Leeuwen (Instituut-Lorentz, Leiden University,2300 RA Leiden, The
Netherlands) |
cond-mat/9407065 | Strong Coupling Descriptions of High Temperature Superconductors:
Electronic Attraction from a Repulsive Potential | We consider the effect of the nearest neighbour copper-oxygen repulsion, V,
when coupled to the charge transfer resonances Cu2+ to Cu3+ and Cu2+ to Cu+ in
the high temperature cuprate superconductors. This is done by deriving
effective low energy Hamiltonians correct to second order in the copper-oxygen
hybridisation. ... | 1994-07-13 | 2009-10-22 | [
"cond-mat"
] | W. Barford and M. W. Long |
cond-mat/9407054 | Josephson Vortex Bloch Oscillations: Single Pair Tunneling Effect | We consider the Josephson vortex motion in a long one--dimensional Josephson
junction in a thin film. We show that this Josephson vortex is similar to a
mesoscopic capacitor. We demonstrate that a single Cooper pair tunneling
results in nonlinear Bloch--type oscillations of a Josephson vortex in a
current-biased Joseph... | 1994-07-12 | 2009-10-22 | [
"cond-mat"
] | R.G. Mints and I.B. Snapiro |
cond-mat/9407052 | Transport Properties of the Kondo Lattice Model in the Limit $S=\infty$
and $D=\infty$ | The Kondo lattice model with Hund's ferromagnetic spin coupling is
investigated as a microscopic model of the perovskite-type 3d transition-metal
oxide La$_{1-x}$Sr$_x$MnO$_3$. In the classical spin limit $S=\infty$ and the
infinite-dimensional limit $D=\infty$, the one-body Green's function is
calculated exactly. Tran... | 1994-07-12 | 2009-10-22 | [
"cond-mat"
] | Nobuo Furukawa |
cond-mat/9407057 | First Passage Time in a Two-Layer System | As a first step in the first passage problem for passive tracer in stratified
porous media, we consider the case of a two-dimensional system consisting of
two layers with different convection velocities. Using a lattice generating
function formalism and a variety of analytic and numerical techniques, we
calculate the a... | 1994-07-12 | 2009-10-22 | [
"cond-mat"
] | Jysoo Lee and Joel Koplik (Benjamin Levich Institute and Department of
Physics, City College of the City University of New York) |
cond-mat/9407056 | Fibonacci Chain Polynomials: Identities from Self-Similarity | Fibonacci chains are special diatomic, harmonic chains with uniform nearest
neighbour interaction and two kinds of atoms (mass-ratio $r$) arranged
according to the self-similar binary Fibonacci sequence $ABAABABA...$, which is
obtained by repeated substitution of $A \to AB$ and $B \to A$. The implications
of the self-s... | 1994-07-12 | 2007-05-23 | [
"cond-mat"
] | Wolfdieter Lang |
cond-mat/9407053 | Large scale quantum simulations: C_60 impacts on a semiconducting
surface | We present tight binding molecular dynamics simulations of C_60 collisions on
the reconstructed diamond(111) surface, carried out with an O(N) method and
with cells containing 1140 atoms. The results of our simulations are in very
good agreement with experiments performed under the same impact conditions.
Furthermore o... | 1994-07-12 | 2016-08-31 | [
"cond-mat"
] | Giulia Galli and Francesco Mauri |
cond-mat/9407050 | Critical and off-critical properties of the $XXZ$ chain in external
homogeneous and staggered magnetic fields | The phase diagram of the $XXZ$ chain under the influence of homogeneous and
staggered magnetic fields is calculated. The model has a rich phase structure
with three types of phases. A fully ferromagnetic phase, an antiferromagnetic
phase and a massless phase with partial ferromagnetic and antiferromagnetic
order. This ... | 1994-07-12 | 2007-05-23 | [
"cond-mat"
] | F. C. Alcaraz and A. L. Malvezzi |
cond-mat/9407051 | Numerical Study of a Field Theory for Directed Percolation | A numerical method is devised for study of stochastic partial differential
equations describing directed percolation, the contact process, and other
models with a continuous transition to an absorbing state. Owing to the
heightened sensitivity to fluctuationsattending multiplicative noise in the
vicinity of an absorbin... | 1994-07-12 | 2009-10-22 | [
"cond-mat"
] | Ronald Dickman |
cond-mat/9407055 | One Dimensional Continuum Falicov-Kimball Model in the Strongly
Correlated Limit | In this paper we study the thermodynamics of the one dimensional continuum
analogue of the Falicov-Kimball model in the strongly correlated limit using a
method developed by Salsburg, Zwanzig and Kirkwood for the Takahashi gas. In
the ground state it is found that the $f$ electrons form a cluster. The effect
of includi... | 1994-07-12 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | R. J. Bursill (Department of Physics, University of Sheffield,
Sheffield, S3 7RH, UK) |
cond-mat/9407049 | Non-equilibrium coherent vortex states and subharmonic giant Shapiro
steps in Josephson junction arrays | This is a review of recent work on the dynamic response of Josephson junction
arrays driven by dc and ac currents. The arrays are modeled by the resistively
shunted Josephson junction model, appropriate for proximity effect junctions,
including self-induced magnetic fields as well as disorder. The relevance of
the self... | 1994-07-11 | 2016-08-14 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | Daniel Dom\'inguez and Jorge V. Jos\'e |
cond-mat/9407048 | Phase diagrams of electronic state on One Dimensional d-p Model | We investigate the one-dimensional(1D) d-p model, simulating a Cu-O linear
chain with strong Coulomb repulsion, by using the numerical diagonalization
method. Using the Luttinger liquid theory, we obtained phase diagrams of the
ground state on $U_d-U_{pd}$ plane, where $U_d$ and $U_{pd}$ represent on-site
interaction a... | 1994-07-10 | 2016-08-14 | [
"cond-mat"
] | Kazuhiro Sano and Yoshiaki \=Ono |
cond-mat/9407042 | $J_1-J_2$ Quantum Heisenberg Antiferromagnet: Improved Spin-Wave
Theories Versus Exact-Diagonalization Data | We reconsider the results cocerning the extreme-quantum $S=1/2$
square-lattice Heisenberg antiferromagnet with frustrating diagonal couplings
($J_1-J_2$ model) drawn from a comparison with exact-diagonalization data. A
combined approach using also some intrinsic features of the self-consistent
spin-wave theory leads to... | 1994-07-08 | 2009-10-22 | [
"cond-mat"
] | N.B. Ivanov and J. Richter |
cond-mat/9407044 | Characteristic Potentials for Mesoscopic Rings Threaded by an
Aharonov-Bohm Flux | Electro-static potentials for samples with the topology of a ring and
penetrated by an Aharonov-Bohm flux are discussed. The sensitivity of the
electron-density distribution to small variations in the flux generates an
effective electro-static potential which is itself a periodic function of flux.
We investigate a simp... | 1994-07-08 | 2015-06-25 | [
"cond-mat"
] | M. Buttiker |
cond-mat/9407041 | On The Violation Of Marshall-Peierls Sign Rule In The Frustrated
$J_{1}-J_{2}$ Heisenberg Antiferromagnet | We present a number of arguments in favor of the suggestion that the
Marshall-Peierls sign rule survives the frustration in the square-lattice
Heisenberg antiferromagnet with frustrating next-nearest-neighbor (diagonal)
bonds ($J_{1}-J_{2}$ model) for relatively large values of the parameter
$J_{2}/J_{1}$. Both the spi... | 1994-07-08 | 2009-10-22 | [
"cond-mat"
] | J. Richter, N.B. Ivanov, and K. Retzlaff |
cond-mat/9407043 | Upper Critical Field in a Spin-Charge Separated Superconductor | It is demonstrated that the spatial decay of the pair propagator in a
Luttinger liquid with spin charge separation contains a logarithmic correction
relative to the free fermi gas result in a finite interval between the spin and
charge thermal lengths. It is argued that similar effects can be expected in
higher dimensi... | 1994-07-08 | 2009-10-22 | [
"cond-mat"
] | R. G. Dias and J. M. Wheatley |
cond-mat/9407045 | New Criticality of 1D Fermions | One-dimensional massive quantum particles (or 1+1-dimensional random walks)
with short-ranged multi-particle interactions are studied by exact
renormalization group methods. With repulsive pair forces, such particles are
known to scale as free fermions. With finite $m$-body forces (m = 3,4,...), a
critical instability ... | 1994-07-08 | 2015-06-25 | [
"cond-mat"
] | M.Lassig |
cond-mat/9407040 | Ab initio molecular dynamics via density based energy functionals | The use of energy functionals based on density as the basic variable is
advocated for ab initio molecular dynamics. It is demonstrated that the
constraint of positivity of density can be incorporated easily by using square
root density for minimization of the energy functional. An ad hoc prescription
for including nonl... | 1994-07-08 | 2009-10-22 | [
"cond-mat"
] | Vaishali Shah, Dinesh Nehete and D. G. Kanhere |
cond-mat/9407046 | A Study of Two-Temperature Non-Equilibrium Ising Models: Critical
Behavior and Universality | We study a class of 2D non-equilibrium Ising models based on competing
dynamics induced by contact with heat-baths at two different temperatures. We
make a comparative study of the non-equilibrium versions of Metropolis, heat
bath/Glauber and Swendsen-Wang dynamics and focus on their critical behavior in
order to under... | 1994-07-08 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | P. Tamayo, F. J. Alexander and R. Gupta |
cond-mat/9407047 | Diffusion-Limited Coalescence with Finite Reaction Rates in One
Dimension | We study the diffusion-limited process $A+A\to A$ in one dimension, with
finite reaction rates. We develop an approximation scheme based on the method
of Inter-Particle Distribution Functions (IPDF), which was formerly used for
the exact solution of the same process with infinite reaction rate. The
approximation become... | 1994-07-08 | 2016-08-31 | [
"cond-mat"
] | Dexin Zhong and Daniel ben-Avraham |
cond-mat/9407039 | Hole Pockets in the Doped 2D Hubbard Model | The electronic momentum distribution ${\rm n({\bf k})}$ of the two
dimensional Hubbard model is studied for different values of the coupling ${\rm
U/t}$, electronic density ${\rm \langle n \rangle}$, and temperature, using
quantum Monte Carlo techniques. A detailed analysis of the data on $8\times 8$
clusters shows tha... | 1994-07-07 | 2009-10-22 | [
"cond-mat"
] | Adriana Moreo and Daniel Duffy |
cond-mat/9407037 | Quantum Group Random Walks in Strongly Correlated $2+1$ $D$ Spin Systems | We consider the temporal evolution of strong correlated degrees of freedom in
$2+1$~$D$ spin systems using the Wilson operator eigenvalues as variables. It
is shown that the quantum-group diffusion equation at deformation parameter $q$
being the $k$-th root of unity has the polynomial solution of degree $k$. | 1994-07-07 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | A. P. Protogenov, Yu. V. Rostovtsev, and V. A. Verbus |
cond-mat/9407038 | A renormalization group analysis of extended electronic states in 1d
quasiperiodic lattices | We present a detailed analysis of the nature of electronic eigenfunctions in
one-dimensional quasi-periodic chains based on a clustering idea recently
introduced by us [Sil et al., Phys. Rev. {\bf B 48}, 4192 (1993) ], within the
framework of the real-space renormalization group approach. It is shown that
even in the a... | 1994-07-07 | 2009-10-22 | [
"cond-mat"
] | Arunava Chakrabarti, S. N. Karmakar and R. K. Moitra |
cond-mat/9407036 | Scaling properties of the ferromagnetic state in the Hubbard model | A numerical scaling analysis is used to show that Nagaoka's ferromagnetic
state in two-dimensional Hubbard model with one hole is supersede by an
antiferromagnetic (AF) state with a discontinuous jump in the total spin due to
the AF coupling as the Hubbard $U$ is made finite. The same applies to the
two-hole system, wh... | 1994-07-07 | 2009-10-22 | [
"cond-mat"
] | K. Kusakabe and H. Aoki |
cond-mat/9407028 | Exact spectra, spin susceptibilities and order parameter of the quantum
Heisenberg antiferromagnet on the triangular lattice | Exact spectra of periodic samples are computed up to $ N=36 $.
Evidence of an extensive set of low lying levels, lower than the softest
magnons, is exhibited.
These low lying quantum states are degenerated in the thermodynamic limit;
their symmetries and dynamics as well as their finite-size scaling are strong
argu... | 1994-07-06 | 2009-10-22 | [
"cond-mat"
] | B. Bernu, P. Lecheminant, C. Lhuillier and L. Pierre |
cond-mat/9407030 | On the classification of the low energy excitations in the doped
antiferromagnet | A long-wavelength, low energy hamiltonian is derived to describe the dynamic
of a single hole in a quantum antiferromagnet in two or higher spatial
dimensions.
In this {\em exactly solvable} limit a {\em new} kind of symmetry is
important to classify the elementary spin excitations of a single hole in the
$t-J$ model... | 1994-07-06 | 2009-10-22 | [
"cond-mat"
] | S. Sorella |
cond-mat/9407035 | Conductance of an Artificial Atom in Strong Magnetic Fields | The conductance resulting from resonant tunneling through a droplet of $N
\sim 30$ electrons is used to measure its chemical potential $\mu_N$. Abrupt
shifts of $\mu_N$ occur at sharply defined values of the magnetic field, at
which the state of the droplet changes. These are used to study part of the
phase-diagram of ... | 1994-07-06 | 2007-05-23 | [
"cond-mat"
] | O. Klein, C. de C. Chamon, D. Tang, D.M. Abusch-Magder, X.-G. Wen,
M.A. Kastner, and S.J. Wind |
cond-mat/9407032 | Influence of Hydrodynamic Interactions on the Adsorption Process of
Large Particles | We have studied the adsorption process of non-Brownian particles on a line
incorporating hydrodynamic interactionsa and we have numerically analyzed their
effect on typical relevant quantities. We compare our model to the ballistic
deposition model (BM) and address the limitations of BM in experimental
situations. The ... | 1994-07-06 | 2009-10-22 | [
"cond-mat"
] | I.Pagonabarraga and M.Rubi (Departament de Fisica Fonamental,
Universitat de Barcelona) |
cond-mat/9407034 | Scaling Phenomena in a Unitary Model of Directed Propagating Waves with
Applications to One-Dimensional Electrons in a Time-Varying Potential | We study a 2D lattice model of forward-directed waves in which the integrated
intensity for classical waves (or probability for quantum mechanical particles)
is conserved. The model describes the time evolution of 1D quantum particle in
a time-varying potential and also applies to propagation of electromagnetic
waves i... | 1994-07-06 | 2009-10-22 | [
"cond-mat"
] | Dinko Cule and Yonathan Shapir |
cond-mat/9407029 | Aging without disorder on long time scales | We study the Metropolis dynamics of a simple spin system without disorder,
which exhibits glassy dynamics at low temperatures. We use an implementation of
the algorithm of Bortz, Kalos and Lebowitz \cite{bortz}. This method turns out
to be very efficient for the study of glassy systems, which get trapped in
local minim... | 1994-07-06 | 2009-10-22 | [
"cond-mat"
] | Werner Krauth and Marc Mezard |
cond-mat/9407031 | Spontaneous Inter-layer Coherence in Double-Layer Quantum-Hall Systems
I: Charged Vortices and Kosterlitz-Thouless Phase Transitions | At strong magnetic fields double-layer two-dimensional-electron-gas systems
can form an unusual broken symmetry state with spontaneous inter-layer phase
coherence. In this paper we explore the rich variety of quantum and
finite-temperature phase transitions associated with this broken symmetry. We
describe the system u... | 1994-07-06 | 2009-10-22 | [
"cond-mat"
] | K. Moon, H. Mori, Kun Yang, S.M. Girvin, A.H. MacDonald, L. Zheng, D.
Yoshioka and Shou-Cheng Zhang |
cond-mat/9407033 | FQHE and Jain's approach on the torus | By using the explicit knowledge of the lowest energy single particle wave
functions in the presence of an {\it arbitrary} magnetic field, we extend to
the case of a torus Jain's idea of looking at the FQHE as a manifestation of an
integer effect for {\it composite fermions}. We show that this can be realized
thanks to ... | 1994-07-06 | 2015-06-25 | [
"cond-mat"
] | G. Cristofano, G. Maiella, R. Musto and F. Nicodemi (Dipartimento di
Scienze Fisiche, Universit\`a di Napoli and INFN Sez. di Napoli) |
cond-mat/9407024 | Renormalization Group Theory for Global Asymptotic Analysis | We show with several examples that renormalization group (RG) theory can be
used to understand singular and reductive perturbation methods in a unified
fashion. Amplitude equations describing slow motion dynamics in nonequilibrium
phenomena are RG equations. The renormalized perturbation approach may be
simpler to use ... | 1994-07-05 | 2009-10-22 | [
"cond-mat",
"hep-th",
"nlin.PS",
"patt-sol"
] | Lin-Yuan Chen, Nigel Goldenfeld and Y. Oono |
cond-mat/9407020 | Exact Solutions of Two-Band Models of Graded-Gap Superlattices | We have theoretically investigated two-band models of graded-gap
superlattices within the envelope-function approximation. Assuming that the gap
varies linearly with spatial coordinate, we are able to find exact solutions of
the corresponding Dirac-like equation describing the conduction- and
valence-band envelope-func... | 1994-07-05 | 2015-06-25 | [
"cond-mat"
] | B. Mendez and F. Dominguez-Adame (Departamento de Fisica de Materiales
Universidad Complutense, E-28040 Madrid, Spain) |
cond-mat/9407027 | Recent Results on the Decay of Metastable Phases | We review some aspects of current knowledge regarding the decay of metastable
phases in many-particle systems. In particular we emphasize recent theoretical
and computational developments and numerical results regarding homogeneous
nucleation and growth in kinetic Ising and lattice-gas models. An introductory
discussio... | 1994-07-05 | 2016-11-03 | [
"cond-mat",
"hep-lat"
] | P.A. Rikvold and B.M. Gorman |
cond-mat/9407019 | A Rapid Dynamical Monte Carlo Algorithm for Glassy Systems | In this paper we present a dynamical Monte Carlo algorithm which is
applicable to systems satisfying a clustering condition: during the dynamical
evolution the system is mostly trapped in deep local minima (as happens in
glasses, pinning problems etc.). We compare the algorithm to the usual Monte
Carlo algorithm, using... | 1994-07-05 | 2009-10-22 | [
"cond-mat"
] | Werner Krauth and Olivier Pluchery |
cond-mat/9407022 | Two-Bit Gates are Universal for Quantum Computation | A proof is given, which relies on the commutator algebra of the unitary Lie
groups, that quantum gates operating on just two bits at a time are sufficient
to construct a general quantum circuit. The best previous result had shown the
universality of three-bit gates, by analogy to the universality of the Toffoli
three-b... | 1994-07-05 | 2009-10-22 | [
"cond-mat",
"hep-lat",
"quant-ph"
] | David P. Divincenzo |
cond-mat/9407025 | XY universality of the stacked triangular Ising antiferromagnet | Histogram analysis of Monte-Carlo simulation results of the Ising
antiferromagnet on a stacked triangular lattice are reported. Finite-size
scaling estimates for critical exponents suggest $XY$ universality. This result
supports earlier predictions based on symmetry arguments and is in contrast
with a recent suggestion... | 1994-07-05 | 2007-05-23 | [
"cond-mat"
] | M.L. Plumer and A. Mailhot (Centre de Recherche en Physique du Solide
et D\'epartement de Physique Universit\'e de Sherbrooke, Sherbrooke,
Qu\'ebec, Canada) |
cond-mat/9407026 | The ground state of a general electron-phonon Hamiltonian is a spin
singlet | The many-body ground state of a very general class of electron-phonon
Hamiltonians is proven to contain a spin singlet (for an even number of
electrons on a finite lattice). The phonons interact with the electronic system
in two different ways---there is an interaction with the local electronic
charge and there is a fu... | 1994-07-05 | 2009-10-22 | [
"cond-mat"
] | J. K. Freericks and E. H. Lieb |
cond-mat/9407021 | Analogies between Scaling in Turbulence, Field Theory and Critical
Phenomena | We discuss two distinct analogies between turbulence and field theory. In one
analogue, the field theory has an infrared attractive renormalization-group
fixed point and corresponds to critical phenomena. In the other analogue, the
field theory has an ultraviolet attractive fixed point, as in quantum
chromodynamics. | 1994-07-05 | 2009-10-22 | [
"cond-mat",
"chao-dyn",
"hep-th",
"nlin.CD"
] | Gregory Eyink and Nigel Goldenfeld |
cond-mat/9407023 | Influence of Long-Range Coulomb Forces and Dissipation on the Persistent
Current of a Wigner Crystal-Ring | The influence of long-range Coulomb forces on the persistent current of a
pinned Wigner crystal-ring is considered. A simple method is proposed for how
to take into account Coulomb effects for the macroscopic quantum tunneling of
the Wigner crystal. It is shown that unscreened Coulomb interactions increase
the stiffnes... | 1994-07-05 | 2016-08-14 | [
"cond-mat"
] | I. V. Krive, P. Sandstr\"om, R. I. Shekhter, and M. Jonson |
cond-mat/9407014 | The Fractional Quantum Hall Effect on a Lattice | Starting from the Hofstadter butterfly, we define lattice versions of Landau
levels as well as a continuum limit which ensures that they scale to continuum
Landau levels. By including a next-neighbor repulsive interaction and
projecting onto the lowest lattice Landau level, we show that incompressible
ground states exi... | 1994-07-04 | 2009-10-22 | [
"cond-mat"
] | F.F. Assaad and S. Biskamp |
cond-mat/9407018 | Exciton Optical Absorption in Self-Similar Aperiodic Lattices | Exciton optical absorption in self-similar aperiodic one-dimensional systems
is considered, focusing our attention on Thue-Morse and Fibonacci lattices as
canonical examples. The absorption line shape is evaluated by solving the
microscopic equations of motion of the Frenkel-exciton problem on the lattice,
in which on-... | 1994-07-04 | 2009-10-22 | [
"cond-mat"
] | E. Macia and F. Dominguez-Adame |
cond-mat/9407013 | Critical Fluctuation Operators for a Quantum Model of Ferroelectric | We consider dependence of the critical fluctuation operators on the rate of
interaction decay for an exactly soluble model of the quantum anharmonic
crystal of ferroelectric type. The critical exponents for the abnormal behavior
of the displacement and momentum fluctuation operators on the critical line are
calculated ... | 1994-07-04 | 2009-10-22 | [
"cond-mat"
] | A. Car, V.A. Zagrebnov |
cond-mat/9407015 | Influence of Long-Range Coulomb Interactions on the Metal-Insulator
Transition in One-Dimensional Strongly Correlated Electron Systems | The influence of long-range Coulomb interactions on the properties of
one-dimensional (1D) strongly correlated electron systems in vicinity of the
metal-insulator phase transition is considered. It is shown that unscreened
repulsive Coulomb forces lead to the formation of a 1D Wigner crystal in the
metallic phase and t... | 1994-07-04 | 2009-10-22 | [
"cond-mat"
] | I. V. Krive, A. A. Nersesyan, M. Jonson, and R. I. Shekhter |
cond-mat/9407016 | Range of the t--J model parameters for CuO$_{2}$ plane: experimental
data constraints | The t-J model effective hopping integral is determined from the three-band
Hubbard model for the charge carriers in CuO$_{2}$ plane. For this purpose the
values of the superexchange constant $J$ and the charge-transfer gap $E_{gap}$
are calculated in the framework of the three-band model. Fitting values of $J$
and $E_{... | 1994-07-04 | 2009-10-22 | [
"cond-mat"
] | V. I. Belinicher, A. L. Chernyshev, L. V. Popovich |
cond-mat/9407017 | Coherent and sequential photoassisted tunneling through a semiconductor
double barrier structure | We have studied the problem of coherent and sequential tunneling through a
double barrier structure, assisted by light considered to be present All over
the structure, i,e emitter, well and collector as in the experimental evidence.
By means of a canonical transformation and in the framework of the time
dependent pertu... | 1994-07-04 | 2009-10-22 | [
"cond-mat"
] | J. Inarrea, G. Platero (Instituto de Ciencia de Materiales (CSIC) and
Departamento de Fisica de la Materia Condensada C-III, Universidad Autonoma,
Cantoblanco, 28049 Madrid, Spain) and C. Tejedor (Departamento de Fisica de
la Materia Condensada, Universidad Autonoma de Madrid, Cantoblanco, 28049
Madrid, Spain) |
cond-mat/9407012 | Fluid Interfaces in the 3D Ising Model as a Dilute Gas of Handles | We study the topology of fluid interfaces in the 3D Ising model in the rough
phase. It turns out that such interfaces are accurately described as dilute
gases of microscopic handles, and the stiffness of the interface increases with
the genus. The number of configurations of genus $g$ follows a Poisson-like
distributio... | 1994-07-04 | 2015-06-25 | [
"cond-mat",
"hep-lat",
"hep-th"
] | M.Caselle, F.Gliozzi and U.Magnea |
cond-mat/9407010 | Effect of Single Particle Hopping and out of Plane Magnetic Impurity on
Coupled Planar Superconductors | It is shown that the single particle band motion along the $c$ axis is
harmful for superconductivity. Variation of $T_c$ with $c$ axis hopping
parameter is shown for both the conventional planar superconductors and for
interlayer pair tunneling mechanism of Wheatley Hsu and Anderson(WHA).Effect of
out of plane magnetic... | 1994-07-03 | 2015-06-25 | [
"cond-mat"
] | Manas Sardar and Debanand Sa |
cond-mat/9407009 | Essential Differences between $ab$ and $c$ Axis Tunneling and Zero Bias
Conductance in the Cuprates | The peculiarities in tunneling characteristics have been studied in the light
of the controversy between s-wave and d-wave character of High $T_c$
superconductivity. We show that anisotropic s-wave gap has the same low voltage
power law conductance and two peak structure in the density of states as d-wave
superconducto... | 1994-07-03 | 2007-05-23 | [
"cond-mat"
] | P. A. Sreeram and Manas Sardar |
cond-mat/9407011 | Quantum Noise Limits for Nonlinear, Phase-Invariant Amplifiers | Any quantum device that amplifies coherent states of a field while preserving
their phase generates noise. A nonlinear, phase-invariant amplifier may
generate less noise, over a range of input field strengths, than any linear
amplifier with the same amplification. We present explicit examples of such
nonlinear amplifie... | 1994-07-03 | 2009-10-22 | [
"cond-mat",
"quant-ph"
] | Dmitri Kouznetsov, Roberto Ortega, and Daniel Rohrlich |
cond-mat/9407008 | The Dynamics of the Bean Critical State | A simple one dimensional model to simulate the establishment of the Bean
critical state is introduced. It is shown that the dynamics of the flux lines
as they enter the superconductor are dominated by `avalanches'. The
distribution of distances moved by vortices in the avalanches obeys a power law
with an exponent of -... | 1994-07-02 | 2015-06-25 | [
"cond-mat"
] | W. Barford, W. H. Beere and M. Steer (University of Sheffield) |
cond-mat/9407007 | Incommensurate and Collinear Phases in a Doped Quantum Anti-ferromagnet | The Schwinger Boson mean field theories of the `t-J' model are extended by
the consideration of anisotropic order parameters. This has two effects. First,
a collinear phase, in which the spins are anti-ferromagnetically aligned in one
direction and ferromagnetically aligned in the other, is found to be stable
over a si... | 1994-07-02 | 2009-10-22 | [
"cond-mat"
] | W. Barford and S. Jadhav (University of Sheffield) |
cond-mat/9407006 | Shape Transition in the Epitaxial Growth of Gold Silicide in Au Thin
Films on Si(111) | Growth of epitaxial gold silicide islands on bromine-passivated Si(111)
substrates has been studied by optical and electron microscopy, electron probe
micro analysis and helium ion backscattering. The islands grow in the shape of
equilateral triangles up to a critical size beyond which the symmetry of the
structure is ... | 1994-07-01 | 2009-10-22 | [
"cond-mat"
] | K. Sekar, G. Kuri, P. V. Satyam, B. Sundaravel, D. P. Mahapatra and B.
N. Dev |
cond-mat/9407004 | Charge Transfer Excitons and the Metal-Insulator Transition in the High
Temperature Superconductors | The effects of the nearest neighbour Coulomb repulsion, V, are considered in
the one dimensional copper-oxide chain using the modified Lanczos method. Above
a critical value of V we find that charge transfer excitons are the lowest
lying energy exitations in the insulating phase. Close to the metal-insulator
transition... | 1994-07-01 | 2007-05-23 | [
"cond-mat"
] | C. Vermeulen, W. Barford and E. R. Gagliano |
cond-mat/9407003 | Collapse of Randomly Self-Interacting Polymers | We use complete enumeration and Monte Carlo techniques to study
self--avoiding walks with random nearest--neighbor interactions described by
$v_0q_iq_j$, where $q_i=\pm1$ is a quenched sequence of ``charges'' on the
chain. For equal numbers of positive and negative charges ($N_+=N_-$), the
polymer with $v_0>0$ undergoe... | 1994-07-01 | 2009-10-22 | [
"cond-mat"
] | Yacov Kantor and Mehran Kardar |
cond-mat/9407001 | Neutron scattering in a d_{x^2-y^2}-wave superconductor with strong
impurity scattering and Coulomb correlations | We calculate the spin susceptibility at and below T_c for a d_{x^2-y^2}-wave
superconductor with resonant impurity scattering and Coulomb correlations. Both
the impurity scattering and the Coulomb correlations act to maintain peaks in
the spin susceptibility, as a function of momentum, at the Brillouin zone edge.
These... | 1994-07-01 | 2009-10-22 | [
"cond-mat"
] | S. M. Quinlan and D. J. Scalapino |
cond-mat/9407070 | Exchange Enhancement of the Electron-Phonon Pair Interaction | The critical temperature of high-$T_c$ superconductors is determined, at
least in part, by the electron-phonon coupling. We include the effect of an
exchange interaction between the electrons and calculate the renormalization of
the bare phonon frequencies and the electron-phonon verticies in a random phase
approximati... | 1994-07-01 | 2009-10-22 | [
"cond-mat"
] | D. Manske, C.T. Rieck, and D. Fay (Universit\"at Hamburg, Germany) |
cond-mat/9407002 | The Abrikosov Flux Lattice in Planar Crystals of YBaCuO | Anisotropic London Theory is used to predict the Abriskosv flux lattice in
planar crystals of YBaCuO. By taking into account the orientation of the flux
lattice as a function of applied field it is shown that the vortex chain state
is observed in Bitter pattern experiments. | 1994-07-01 | 2007-05-23 | [
"cond-mat"
] | M Harrison and W Barford (University of Sheffield) |
cond-mat/9407005 | Excitation decay in one-dimensional disordered systems with paired traps | Incoherent transport of excitations in one-dimensional disordered lattices
with pairs of traps placed at random is studied by numerically solving the
corresponding master equation. Results are compared to the case of lattices
with the same concentration of unpaired traps, and it is found that pairing of
traps causes a ... | 1994-07-01 | 2009-10-22 | [
"cond-mat"
] | Angel Sanchez, Francisco Dominguez-Adame, and Enrique Macia |
cond-mat/9406121 | Superconductivity in the cuprates | We evaluate numerically several superconducting correlation functions in a
generalized $t-J$ model derived for hole-doped CuO$_2$ planes. The model
includes a three-site term $t''$ similar to that obtained in the large $U$
limit of the Hubbard model but of opposite sign for realistic O-O hopping. For
realistic paramete... | 1994-06-30 | 2007-05-23 | [
"cond-mat"
] | C.D. Batista and A.A. Aligia |
cond-mat/9406119 | Field theory formulation of the Quantum Hall Effect | We consider the quantum Hall effect in terms of an effective field theory
formulation of the edge states, providing a natural common framework for the
fractional and integral effects. | 1994-06-30 | 2007-05-23 | [
"cond-mat"
] | E. Abdalla and M. C. B. Abdalla |
cond-mat/9406122 | Exact Solution of a Hubbard Chain with Bond-Charge Interaction | We obtain the exact solution of a general Hubbard chain with kinetic energy
$t$, bond-charge interaction $X$ and on-site interaction $U$ with the only
restriction $t = X$. At zero temperature and half filling, the model exhibits a
Mott transition at $U = 4t$. In the metallic phase and near half filling,
superconducting... | 1994-06-30 | 2007-05-23 | [
"cond-mat"
] | A. A. Aligia and L. Arrachea |
cond-mat/9406123 | Complex conductivity of $\rm Y_{1-x}Pr_xBa_2Cu_3O_7$ thin films measured
by coherent terahertz spectroscopy | The complex transmission of Y_{1-x}Pr_xBa_2Cu_3O_7 single crystal thin films
has been measured in the range 0.2-1.0 THz using time domain spectroscopy. The
complex conductivity is calculated without using a Kramers-Kronig analysis. All
of the superconducting samples show a peak in $\sigma_1(T)$ below $T_c$. The
underdo... | 1994-06-30 | 2009-10-22 | [
"cond-mat"
] | J.O. White, R. Buhleier, S.D. Brorson, I.E. Trofimov, H.-U.
Habermeier, and J. Kuhl (Max-Planck-Institut f\"ur Festk\"orperforschung,
Postfach 800665, 70506 Stuttgart, Germany) |
cond-mat/9406120 | Universal and Non-Universal First-Passage Properties of Planar Multipole
Flows | The dynamics of passive Brownian tracer particles in steady two-dimensional
potential flows between sources and sinks is investigated. The first-passage
probability, $p(t)$, exhibits power-law decay with a velocity-dependent
exponent in radial flow and an order-dependent exponent in multipolar flows.
For the latter, th... | 1994-06-30 | 2009-10-22 | [
"cond-mat"
] | J. Koplik, S. Redner, and E. J. Hinch |
cond-mat/9406116 | Negative Kinetic Energy Between Past and Future State Vectors | An analysis of errors in measurement yields new insight into classically
forbidden quantum processes. In addition to "physical" values, a realistic
measurement can yield "unphysical" values; we show that in {\it sequences} of
measurements, the "unphysical" values can form a consistent pattern. An
experiment to isolate ... | 1994-06-29 | 2009-10-22 | [
"cond-mat",
"quant-ph"
] | Daniel Rohrlich, Yakir Aharonov, Sandu Popescu, and Lev Vaidman |
cond-mat/9406117 | Quantum Breaking of Elastic String | Breaking of an atomic chain under stress is a collective many-particle
tunneling phenomenon. We study classical dynamics in imaginary time by using
conformal mapping technique, and derive an analytic formula for the probability
of breaking. The result covers a broad temperature interval and interpolates
between two reg... | 1994-06-29 | 2008-04-12 | [
"cond-mat"
] | L. S. Levitov, A. V. Shytov, and A. Yu. Yakovets |
cond-mat/9406118 | Cross relaxation and the bilayer coupling in YBCO | There is strong experimental evidence for substantial antiferromagnetic
coupling between the CuO$_2$ planes of the bilayers in YBCO compounds. The
acoustic mode of the spin excitation spectrum has been measured but the optic
mode has not been observed. Theoretical estimates suggest values for the
antiferromagnetic inte... | 1994-06-29 | 2009-10-22 | [
"cond-mat"
] | H. Monien and T. M. Rice (Theoretische Physik, ETH Zuerich,
Hoenggerberg, Switzerland) |
cond-mat/9406115 | Doping Dependence of the Chemical Potential in cuprate high T$_c$
superconductors II: (Bi,Pb)$_{2}$Sr$_{2}$Ca$_{2}$Cu$_{3}$%
O$_{10+\mbox{\small\protect\boldmath $\delta$}}$ | Using X-ray photoelectron spectroscopy, a systematic study is performed of
the doping dependence of the chemical potential $\mu$ in two systems of
(Bi,Pb)$_2$Sr$_2$Ca$_2$Cu$_3$O$_{10+\delta}$. The doping is varied by changing
the O content of the sample. The measured shifts of the chemical potential are
compared with p... | 1994-06-29 | 2009-10-22 | [
"cond-mat"
] | G. Rietveld, S. J. Collocot, D. van der Marel |
cond-mat/9406113 | Fermionic Chern-Simons theory for the Fractional Quantum Hall Effect in
Bilayers | We generalize the fermion Chern-Simons theory for the Fractional Hall Effect
(FQHE) which we developed before, to the case of bilayer systems. We study the
complete dynamic response of these systems and predict the experimentally
accessible optical properties. In general, for the so called $(m, m, n)$
states, we find t... | 1994-06-28 | 2009-10-22 | [
"cond-mat"
] | Ana Lopez and Eduardo Fradkin |
cond-mat/9406114 | Application of a constrained-transfer-matrix method to metastability in
the $d$$=$$2$ Ising ferromagnet | Applying a numerical transfer-matrix formalism, we obtain complex-valued
constrained free energies for the two-dimensional square-lattice
nearest-neighbor Ising ferromagnet below its critical temperature and in an
external magnetic field. In particular, we study the imaginary part of the
constrained free-energy branch ... | 1994-06-28 | 2016-08-14 | [
"cond-mat"
] | C. C. A. G\"unther, P. A. Rikvold, and M. A. Novotny |
cond-mat/9406112 | Fluctuating Interfaces in Microemulsion and Sponge Phases | A simple Ginzburg-Landau theory with a single, scalar order parameter is used
to study the microscopic structure of microemulsions and sponge phases. The
scattering intensity in both film and bulk contrast, as well as averages of the
internal area $S$, the Euler characteristic $\chi_E$, and the mean curvature
squared $... | 1994-06-28 | 2009-10-22 | [
"cond-mat"
] | G. Gompper and J. Goos |
cond-mat/9406110 | Composite Fermions and the Energy Gap in the Fractional Quantum Hall
Effect | The energy gaps for the fractional quantum Hall effect at filling fractions
1/3, 1/5, and 1/7 have been calculated by variational Monte Carlo using Jain's
composite fermion wave functions before and after projection onto the lowest
Landau level. Before projection there is a contribution to the energy gaps from
the firs... | 1994-06-28 | 2009-10-22 | [
"cond-mat"
] | N.E. Bonesteel |
cond-mat/9406111 | Doping Dependence of the Chemical Potential in Cuprate High-$T_{\rm c}$
Superconductors I: La$_{2-x}$Sr$_x$CuO$_4$ | The names of the authors, which were inadvertedly lacking in the tex-file
submitted two days ago, have been added. | 1994-06-28 | 2015-06-25 | [
"cond-mat"
] | G. Rietveld, M. Glastra, D. van der Marel |
cond-mat/9406106 | Quantum Phase Transition in the Frustrated Heisenberg Antiferromagnet | Using the J_1-J_2 model, we present a description of quantum phase transition
from Neel ordered to the spin-liquid state based on the modified spin wave
theory. The general expression for the gap in the spectrum in the spin-liquid
phase is presented. | 1994-06-27 | 2009-10-22 | [
"cond-mat"
] | A. Dotsenko and O. Sushkov |
cond-mat/9406103 | Observation of the Holstein shift in high $T_c$ superconductors with
thermal modulation reflectometry | We use the experimental technique of thermal modulation reflectometry to
study the relatively small temperature dependence of the optical conductivity
of superconductors. Due to a large cancellation of systematic errors, this
technique is shown to a be very sensitive probe of small changes in
reflectivity. We analyze t... | 1994-06-27 | 2009-10-22 | [
"cond-mat"
] | O. V. Dolgov, A.E. Karakozov, A.A. Mikhailovsky, B.J. Feenstra, and D.
van der Marel |
cond-mat/9406102 | Resonance Magnetoresistance in Coupled Quantum Wells | The in-plane magnetic field suppresses the quantum coupling between electrons
in a double quantum well structure. The microscopical theory of this effect is
developed and confirmed experimentally. We have shown that the decrease of the
"resistance resonance" peak is sensitive to the mutual orientation of the
current an... | 1994-06-27 | 2007-05-23 | [
"cond-mat"
] | Y. Berk, A. Kamenev, A. Palevski, L. N. Pfeiffer, and K. W. West |
cond-mat/9406105 | Quantum melting of the long-range antiferromagnetic order and spin-wave
condensation in t-J-V model | We consider two-dimensional t-J-V model. The wave function of the ground
state is constructed. We demonstrate that the doping by holes results in
condensation of the spin-waves, destruction of the long-range antiferromagnetic
order and formation of the gap in the spin-wave spectrum. | 1994-06-27 | 2007-05-23 | [
"cond-mat"
] | M.Yu. Kuchiev and O. P. Sushkov |
cond-mat/9406104 | Order Parameter Flow in the SK Spin-Glass I: Replica Symmetry | We present a theory to describe the dynamics of the Sherrington- Kirkpatrick
spin-glass with (sequential) Glauber dynamics in terms of deterministic flow
equations for macroscopic parameters. Two transparent assumptions allow us to
close the macroscopic laws. Replica theory enters as a tool in the calculation
of the ti... | 1994-06-27 | 2009-10-22 | [
"cond-mat"
] | A.C.C Coolen and D. Sherrington |
cond-mat/9406109 | Kinetics of Heterogeneous Single-Species Annihilation | We investigate the kinetics of diffusion-controlled heterogeneous
single-species annihilation, where the diffusivity of each particle may be
different. The concentration of the species with the smallest diffusion
coefficient has the same time dependence as in homogeneous single-species
annihilation, A+A-->0. However, t... | 1994-06-27 | 2009-10-22 | [
"cond-mat"
] | P. L. Krapivsky, E. Ben-Naim and S. Redner |
cond-mat/9406107 | Gap Labelling for Schr\"odinger Operators on Quasiperiodic Tilings | For a large class of tilings, including those which are obtained by the
generalized dual method from regular grids, it is shown that their algebra is
stably isomorphic to a crossed product with $\Z^d$. Penrose tilings belong to
this class. This enlarges the class of tilings of which can be shown that a set
of possible ... | 1994-06-27 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | Johannes Kellendonk |
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