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 |
|---|---|---|---|---|---|---|
cond-mat/9502068 | Analytical results for Scaling Properties of the Spectrum of the
Fibonacci Chain | We solve the approximate renormalisation group found by Qiu Niu and Franco
Nori(Phys. Rev. Lett. 57 2057(1986)) for a tight-binding hamiltonian on the
Fibonacci chain. This enables us to characterize analytically as completely as
possible the spectral properties of this model, such as the spectral measure,
the bandwidt... | 1995-02-16 | 2021-03-04 | [
"cond-mat"
] | F. Pi\'echon M. Benakli and A. Jagannathan |
cond-mat/9502064 | X-Ray Reflectivity of Fibonacci Multilayers | We have numerically computed the reflectivity of X-ray incident normally onto
Fibonacci multilayers, and compared the results with those obtained in periodic
approximant multilayers. The constituent layers are of low and high refractive
indices with the same thickness. Whereas reflectivity of periodic approximant
multi... | 1995-02-15 | 2009-10-28 | [
"cond-mat"
] | F. Dominguez-Adame and E. Macia |
cond-mat/9502059 | Weak levitation of 2D delocalized states in a magnetic field. | The deviation of the energy position of a delocalized state from the center
of Landau level is studied in the framework of the Chalker-Coddington model. It
is demonstrated that introducing a weak Landau level mixing results in a shift
of the delocalized state up in energy. The mechanism of a levitation is a
neighboring... | 1995-02-15 | 2016-08-31 | [
"cond-mat"
] | T. V. Shahbazyan and M. E. Raikh |
cond-mat/9502060 | Theory of the Resonant Neutron Scattering of High $T_c$ Superconductors | Recent polarized neutron scattering experiments on $YBa_2 Cu_3 O_7$ have
revealed a sharp spectral peak at the $(\pi,\pi)$ in reciprocal lattice
centered around the energy transfer of $41\ meV$. We offer a theoretical
explanation of this remarkable experiment in terms of a new collective mode in
the particle particle c... | 1995-02-15 | 2016-08-31 | [
"cond-mat"
] | Eugene Demler and Shou-Cheng Zhang |
cond-mat/9502065 | Generalization of the Fortuin-Kasteleyn transformation and its
application to quantum spin simulations, | We generalize the Fortuin-Kasteleyn (FK) cluster representation of the
partition function of the Ising model to represent the partition function of
quantum spin models with an arbitrary spin magnitude in arbitrary dimensions.
This generalized representation enables us to develop a new cluster algorithm
for the simulati... | 1995-02-15 | 2016-08-31 | [
"cond-mat"
] | N. Kawashima and J. E. Gubernatis |
cond-mat/9502061 | Replica Symmetry Breaking and the Renormalization Group Theory of the
Weakly Disordered Ferromagnet | We study the critical properties of the weakly disordered $p$-component
ferromagnet in terms of the renormalization group (RG) theory generalized to
take into account the replica symmetry breaking (RSB) effects coming from the
multiple local minima solutions of the mean-field equations. It is shown that
for $p < 4$ the... | 1995-02-15 | 2016-08-31 | [
"cond-mat"
] | Viktor Dotsenko and D.E.Feldman |
cond-mat/9502063 | Three-dimensional Folding of the Triangular Lattice | We study the folding of the regular triangular lattice in three dimensional
embedding space, a model for the crumpling of polymerised membranes. We
consider a discrete model, where folds are either planar or form the angles of
a regular octahedron. These "octahedral" folding rules correspond simply to a
discretisation ... | 1995-02-15 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | M. Bowick, P. Di Francesco, O. Golinelli and E. Guitter |
cond-mat/9502066 | INTERLAYER VORTICES AND EDGE DISLOCATIONS IN HIGH TEMPERATURE
SUPERCONDUCTORS | The interaction of an edge dislocation made of half the superconducting plane
with a magnetic interlayer vortex is considered within the framework of the
Lawrence-Doniach model with negative as well as positive Josephson interlayer
coupling. In the first case the binding energy of the vortex and the
dislocation has bee... | 1995-02-15 | 2016-08-31 | [
"cond-mat"
] | A.B. Kuklov, A. Krakovsky, and Joseph L Birman |
cond-mat/9502062 | The specific heat of superfluids near the transition temperature | The specific heat of the $x-y$ model is studied on cubic lattices of sizes $L
\times L \times L$ and on lattices $L \times L \times H$ with $L \gg H$ (i.e.
on lattices representing a film geometry) using the Cluster Monte Carlo method.
Periodic boundary conditions were applied in all directions. In the cubic case
we ob... | 1995-02-15 | 2016-08-31 | [
"cond-mat",
"hep-lat"
] | N. Schultka and E. Manousakis |
cond-mat/9502056 | Traces of a Quantum Anti-Resonance in a Driven System | It has been previously shown, that classically chaotic kicked systems, whose
unperturbed spectrum posseses one energy scale, admits a quantum anti-resonance
(QAR) behavior. In this study we extend the conditions under which which this
QAR occurs for the case of a two-sided kicked 1D infinite potential well. It is
then ... | 1995-02-14 | 2009-10-28 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | Eli Eisenberg, Rachel Avigur and Nadav Shnerb |
cond-mat/9502057 | Mean Field Theory of the Localization Transition | A mean field theory of the localization transition for bosonic systems is
developed. Localization is shown to be sensitive to the distribution of the
random site energies. It occurs in the presence of a triangular distribution,
but not a uniform one. The inverse participation ratio, the single site Green's
function, th... | 1995-02-14 | 2016-08-31 | [
"cond-mat"
] | F. Pazmandi, G.T. Zimanyi and R. T. Scalettar |
cond-mat/9502055 | Flux lattice melting and depinning in the weakly frustrated 2D XY model | Monte Carlo simulations of the frustrated 2D XY model were carried out at
small commensurate values of the frustration $f$. For $f=1/30$ a single
transition was observed at which phase coherence (finite helicity modulus) and
vortex lattice orientational order vanish together. For $f=1/56$ a new phase in
which phase coh... | 1995-02-14 | 2016-08-31 | [
"cond-mat"
] | SA Hattel and JM Wheatley |
cond-mat/9502058 | Composite Fermions, Edge Currents and the Fractional Quantum Hall Effect | We present a theory of composite fermion edge states and their transport
properties in the fractional and integer quantum Hall regimes. We show that the
effective electro-chemical potentials of composite fermions at the edges of a
Hall bar differ, in general, from those of electrons. An expression for the
difference is... | 1995-02-14 | 2009-10-28 | [
"cond-mat"
] | George Kirczenow and Brad L. Johnson |
cond-mat/9502048 | THEORY OF PHASE-LOCKING IN SMALL JOSEPHSON JUNCTION CELLS | Within the RSJ model, we performed a theoretical analysis of phase-locking in
elementary strongly coupled Josephson junction cells. For this purpose, we
developed a systematic method allowing the investigation of phase-locking in
cells with small but non-vanishing loop inductance.The voltages across the
junctions are f... | 1995-02-13 | 2016-08-31 | [
"cond-mat"
] | M. Basler, W. Krech and K. Yu. Platov |
cond-mat/9502054 | Disorder-Driven Pretransitional Tweed in Martensitic Transformations | Defying the conventional wisdom regarding first--order transitions, {\it
solid--solid displacive transformations} are often accompanied by pronounced
pretransitional phenomena. Generally, these phenomena are indicative of some
mesoscopic lattice deformation that ``anticipates'' the upcoming phase
transition. Among thes... | 1995-02-13 | 2016-08-31 | [
"cond-mat",
"mtrl-th"
] | Sivan Kartha, James Krumhansl, James Sethna, and Lisa Wickham |
cond-mat/9502053 | Griffiths singularity in the two dimensional random bond disordered
Ising ferromagnet | For the two dimensional random bond disordered Ising ferromagnet, we measured
bulk data of the magnetic susceptibility ($\chi$) and correlation length
($\xi$) up to $\xi \simeq 536$, with the use of a novel finite size scaling
Monte Carlo technique. Our data are exclusively consistent with normal
power-law critical beh... | 1995-02-13 | 2016-08-31 | [
"cond-mat"
] | Jae-Kwon Kim |
cond-mat/9502047 | Edge states in Open Antiferromagnetic Heisenberg Chains | In this letter we report our results in investigating edge effects of open
antiferromagnetic Heisenberg spin chains with spin magnitudes $S=1/2, 1,3/2,2$
using the density-matrix renormalization group (DMRG) method initiated by
White. For integer spin chains, we find that edge states with spin magnitude
$S_{edge}=S/2$ ... | 1995-02-13 | 2009-10-28 | [
"cond-mat"
] | Shaojin Qin (ITP-AS), Tai-Kai Ng(USTHK), Zhao-Bin Su(ITP-AS) |
cond-mat/9502049 | Frenkel Excitons in Random Systems With Correlated Gaussian Disorder | Optical absorption spectra of Frenkel excitons in random one-dimensional
systems are presented. Two models of inhomogeneous broadening, arising from a
Gaussian distribution of on-site energies, are considered. In one case the
on-site energies are uncorrelated variables whereas in the second model the
on-site energies a... | 1995-02-13 | 2009-10-28 | [
"cond-mat"
] | F. Dominguez-Adame |
cond-mat/9502050 | Use of the Generalized Gradient Approximation in Pseudopotential
Calculations of Solids | We present a study of the equilibrium properties of $sp$-bonded solids within
the pseudopotential approach, employing recently proposed generalized gradient
approximation (GGA) exchange correlation functionals. We analyze the effects of
the gradient corrections on the behavior of the pseudopotentials and discuss
possib... | 1995-02-13 | 2016-08-31 | [
"cond-mat",
"mtrl-th"
] | Yumin Juan and Efthimios Kaxiras |
cond-mat/9502052 | Effective field theory | I give a brief review of effective field theory, disscussing the contribution
of Feza G\"ursey in particular and focusing on the literature I am most
familiar with. | 1995-02-13 | 2015-06-25 | [
"cond-mat",
"hep-ph"
] | Anthony Zee |
cond-mat/9502051 | Theoretical Study of Cubic Structures Based on Fullerene Carbon
Clusters: C$_{28}$C and (C$_{28})_{2}$ | We study a new hypothetical form of solid carbon \csc, with a unit cell which
is composed of the \cs \ fullerene cluster and an additional single carbon atom
arranged in the zincblende structure. Using {\it ab initio} calculations, we
show that this new form of solid carbon has lower energy than hyperdiamond, the
recen... | 1995-02-13 | 2016-08-31 | [
"cond-mat",
"mtrl-th"
] | Linda M. Zeger, Yu-Min Juan, Efthimios Kaxiras and A. Antonelli |
cond-mat/9502046 | Theory of Interacting Parallel Quantum Wires | We present self-consistent numerical calculations of the electronic structure
of parallel Coulomb-confined quantum wires, based on the Hohenberg-Kohn-Sham
density functional theory of inhomogeneous electron systems. We find that the
corresponding transverse energy levels of two parallel wires lock together when
the wir... | 1995-02-12 | 2015-06-25 | [
"cond-mat"
] | Yinlong Sun and George Kirczenow |
cond-mat/9502045 | Static Chaos in Spin Glasses against quenched disorder perturbations | We study the chaotic nature of spin glasses against perturbations of the
realization of the quenched disorder. This type of perturbation modifies the
energy landscape of the system without adding extensive energy. We exactly
solve the mean-field case, which displays a very similar chaos to that observed
under magnetic ... | 1995-02-11 | 2016-08-31 | [
"cond-mat"
] | Vicente Azcoiti, Eduardo Follana and Felix Ritort |
cond-mat/9502043 | Magnetism and Pairing in Hubbard Bilayers. | We study the Hubbard model on a bilayer with repulsive on-site interactions,
$U$, in which fermions undergo both intra-plane ($t$) and inter-plane ($t_z$)
hopping. This situation is what one would expect in high-temperature
superconductors such as YBCO, with two adjacent CuO$_2$ planes. Magnetic and
pairing properties ... | 1995-02-10 | 2016-08-31 | [
"cond-mat"
] | Raimundo R dos Santos (Universidade Federal Fluminense, Brasil) |
cond-mat/9502044 | Bilayers of Chiral Spin States | We study the behavior of two planes of Quantum Heisenberg Antiferromagnet in
the regime in which a Chiral Spin Liquid is stabilized in each plane. The
planes are coupled by an exchange interaction of strength $J_3$. We show that
in the regime of small $J_3$ (for both ferromagnetic {\it and}
antiferromagnetic coupling),... | 1995-02-10 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | Carlos Cassanello and Eduardo Fradkin |
cond-mat/9502042 | The influence of structure disorder on mean atomic momentum fluctuations
and a spin-wave spectrum | The relation between atomic momenta fluctuations and density fluctuations is
obtained in frames of mean-field approximation. Using two-time temperature
Green functions within Tyablikov approximation the equations for spin
excitation energy and damping are obtained. The asymptotics of energy and
damping in the long-wave... | 1995-02-10 | 2016-09-07 | [
"cond-mat"
] | I. Vakarchuk, V. Tkachuk, T. Kuliy (Ivan Franko Lviv State University) |
cond-mat/9502041 | Life and Death in a Cage and at the Edge of a Cliff | The survival probabilities of a ``prisoner'' diffusing in an expanding cage
and a ``daredevil'' diffusing at the edge of a receding cliff are investigated.
When the diffuser reaches the boundary, he dies. For ``marginal'' boundary
motion, i.e., the cage length grows as $\sqrt{At}$ or the cliff location
recedes as $x_0(... | 1995-02-10 | 2009-10-28 | [
"cond-mat"
] | P. L. Krapivsky and S. Redner (Boston University) |
cond-mat/9502040 | Type II Anyon Superconductivity | Assuming that the superconductivity which is described by the low energy
effective action of the anyon system may be type II, we discuss its
characteristics. We also study physical properties of the Chern-Simons
vortices, which may be formed as the external magnetic field is applied to the
system, such as their statist... | 1995-02-10 | 2015-06-25 | [
"cond-mat",
"hep-th"
] | Jewan Kim, Jungdae Kim and Taejin Lee |
cond-mat/9502038 | Experimental determination of the quasi-particle decay length
$\xi_{\text{Sm}}$ in a superconducting quantum well | We have investigated experimentally the electronic transport properties of a
two-dimensional electron gas (2DEG) present in an AlSb/InAs/AlSb quantum well,
where part of the toplayer has been replaced by a superconducting Nb strip,
with an energy gap $\Delta_0$. By measuring the lateral electronic transport
underneath ... | 1995-02-09 | 2009-10-28 | [
"cond-mat"
] | P.H.C. Magnee, B.J. van Wees, T.M. Klapwijk, W. van de Graaf and G.
Borghs |
cond-mat/9502037 | Effect of the Three-Site Hopping Term on the t-J Model | We have used exact diagonalization and quantum Monte Carlo methods to study
the one-dimensional {t-J} model including the three-site hopping term derived
from the strong coupling limit of the Hubbard model. The three-site term may be
important to superconducting correlations since it allows direct hopping of
local sing... | 1995-02-09 | 2007-05-23 | [
"cond-mat"
] | Beat Ammon, Matthias Troyer and Hirokazu Tsunetsugu |
cond-mat/9502039 | PHASE TRANSITION OF N-COMPONENT SUPERCONDUCTORS | We investigate the phase transition in the three-dimensional abelian Higgs
model for N complex scalar fields, using the gauge-invariant average action
\Gamma_{k}. The dependence of \Gamma_{k} on the effective infra-red cut-off k
is described by a non-perturbative flow equation. The transition turns out to
be first- or ... | 1995-02-09 | 2015-06-25 | [
"cond-mat",
"hep-ph",
"supr-con"
] | B.Bergerhoff, D.Litim, S.Lola, and C.Wetterich, |
cond-mat/9502034 | Heavy Particle in a d-dimensional Fermionic Bath: A Strong Coupling
Approach | We investigate the low temperature behavior of a heavy particle (mass $M$) in
a fermionic bath. An effective action is considered which exactly implements
the orthogonality catastrophe. It is equivalent to a model of local bosons
coupling via a long-range interaction to the particle. The saddlepoint solution
for the he... | 1995-02-08 | 2010-05-24 | [
"cond-mat"
] | Achim Rosch and Thilo Kopp |
cond-mat/9502035 | S and D Wave Mixing in High $T_c$ Superconductors | For a tight binding model with nearest neighbour attraction and a small
orthorhombic distortion, we find a phase diagram for the gap at zero
temperature which includes three distinct regions as a function of filling. In
the first, the gap is a mixture of mainly $d$-wave with a smaller extended
$s$-wave part. This is fo... | 1995-02-08 | 2016-08-31 | [
"cond-mat"
] | C. O'Donovan and J. C. Carbotte |
cond-mat/9502032 | Singularities in the Fermi liquid description of a partially filled
Landau level and the energy gaps of fractional quantum Hall states | We consider a two dimensional electron system in an external magnetic field
at and near an even denominator Landau level filling fraction. Using a
fermionic Chern--Simons approach we study the description of the system's low
energy excitations within an extension of Landau's Fermi liquid theory. We
calculate perturbati... | 1995-02-08 | 2009-10-28 | [
"cond-mat"
] | Ady Stern and Bertrand I. Halperin (Harvard) |
cond-mat/9502031 | The Quantum Hall Effect and Inter-edge State Tunneling Within a Barrier | We have introduced a controllable nano-scale incursion into a potential
barrier imposed across a two-dimensional electron gas, and report on the
phenomena that we observe as the incursion develops. In the quantum Hall
regime, the conductance of this system displays quantized plateaus, broad
minima and oscillations. We ... | 1995-02-08 | 2009-10-28 | [
"cond-mat"
] | B.L. Johnson, A.S. Sachrajda, G. Kirczenow, Y. Feng, R.P. Taylor, L.
Henning, J. Wang, P. Zawadzki, and P.T. Coleridge |
cond-mat/9502033 | Independent-Electron Model for the Phase of the Transmission Amplitude
in Quantum Dots | Motivated by a recent experiment by Yacoby et al.\ [preprint, 1994], we
calculate magnitude and phase $\alpha$ of the transmission amplitude through a
quantum dot. We work in the Coulomb blockade regime, assume the electrons not
to interact, and consider tunneling through isolated resonances. Assuming a
non--resonant b... | 1995-02-08 | 2016-08-31 | [
"cond-mat"
] | G. Hackenbroich and H. A. Weidenmueller |
cond-mat/9502036 | Singularities and Avalanches in Interface Growth with Quenched Disorder | A simple model for an interface moving in a disordered medium is presented.
The model exhibits a transition between the two universality classes of
interface growth phenomena. Using this model, it is shown that the application
of constraints to the local slopes of the interface produces avalanches of
growth, that becom... | 1995-02-08 | 2016-08-31 | [
"cond-mat"
] | Hernan Makse |
cond-mat/9502029 | Dynamic response of isolated Aharonov-Bohm rings coupled to an
electromagnetic resonator | We have measured the flux dependence of both real and imaginary conductance
of $GaAs/GaAlAs$ isolated mesoscopic rings at 310 MHz. The rings are coupled to
a highly sensitive electromagnetic superconducting micro-resonator and lead to
a perturbation of the resonance frequency and quality factor. This experiment
provide... | 1995-02-07 | 2009-10-28 | [
"cond-mat"
] | Bertrand Reulet, Michel Ramin, Helene Bouchiat and Dominique Mailly |
cond-mat/9502030 | Finite size effects in metallic superlattice systems | Clean metallic superlattice systems composed of alternating layers of
superconducting and normal materials are considered, particularly aspects of
the proximity effect as it affects the critical temperature. A simple model is
used to address the question of when a finite--sized system theoretically
approximates well a ... | 1995-02-07 | 2015-06-25 | [
"cond-mat"
] | J. Chen, R. Kobes, and J. Wang |
cond-mat/9502021 | Spin-Phonon Coupling in the Single-Layer Extended t-J Model | We consider the implications of spin-phonon coupling within the slave-boson,
mean-field treatment of the extended t-J model of a high-temperature
superconductor. In bilayer cuprates such as YBaCuO, where the $CuO_2$ plane is
buckled, this interaction is linear in $O$ displacement along the c-axis, and
the coupling cons... | 1995-02-06 | 2009-10-28 | [
"cond-mat"
] | B. Normand, H. Kohno and H. Fukuyama |
cond-mat/9502024 | The Ground States of Large Quantum Dots in Magnetic Fields | The quantum mechanical ground state of a 2D $N$-electron system in a
confining potential $V(x)=Kv(x)$ ($K$ is a coupling constant) and a homogeneous
magnetic field $B$ is studied in the high density limit $N\to\infty$, $K\to
\infty$ with $K/N$ fixed. It is proved that the ground state energy and
electronic density can ... | 1995-02-06 | 2009-10-28 | [
"cond-mat"
] | E. H. Lieb and J. P. Solovej and J. Yngvason |
cond-mat/9502028 | Scaling Behavior of Granular Particles in a Vibrating Box | Using numerical and analytic methods, we study the behavior of granular
particles contained in a vibrating box. We measure, by molecular dynamics (MD)
simulation, several quantities which characterize the system. These
quantities--the density and the granular temperature fields, and the vertical
expansion--obey scaling... | 1995-02-06 | 2015-06-25 | [
"cond-mat"
] | Jysoo Lee (Levich Institute, City College of New York) |
cond-mat/9502020 | An Enhanced Perturbational Study on Spectral Properties of the Anderson
Model | The infinite-$U$ single impurity Anderson model for rare earth alloys is
examined with a new set of self-consistent coupled integral equations, which
can be embedded in the large $N$ expansion scheme ($N$ is the local spin
degeneracy). The finite temperature impurity density of states (DOS) and the
spin-fluctuation spe... | 1995-02-06 | 2009-10-28 | [
"cond-mat"
] | F B Anders |
cond-mat/9502023 | Superconducting Instability in a 1D lattice of Berry Phase Molecules | We study the 1D model of conduction electrons interacting with local vibronic
modes. States in the conduction band are two-fold degenerate both in orbital
index and spin. It is shown that such 1D system has a strong tendency to
superconductivity. The superconducting pairing originates from coupling of two
charge densit... | 1995-02-06 | 2007-05-23 | [
"cond-mat"
] | D. Shelton and A. M. Tsvelik |
cond-mat/9502026 | Topological Defects in the Random-Field XY Model and Randomly Pinned
Vortex Lattices | As a simplified model of randomly pinned vortex lattices or charge-density
waves, we study the random-field XY model on square ($d=2$) and simple cubic
($d=3$) lattices. We argue, and confirm in simulations, that the spacing
between topological defects (vortices) diverges more strongly than the Imry-Ma
pinning length a... | 1995-02-06 | 2015-04-07 | [
"cond-mat"
] | Michel J.P. Gingras (TRIUMF) and David A. Huse (AT\&T Bell Labs) |
cond-mat/9502022 | Existence of Low-Temperature Critical Regime in 1D Luttinger Liquid with
a Weak Link | The exact solution of the boundary sine-Gordon model is studied in the region
where the scaling dimension of the boundary field $1 < \Delta < 1$. It is shown
that at $\Delta > 2/3$ the infrared fixed point belongs to the universality
class of the underscreened anisotropic Kondo model. The boundary contribution
to the s... | 1995-02-06 | 2009-10-28 | [
"cond-mat"
] | A. M. Tsvelik |
cond-mat/9502027 | Rigorous results on superconducting ground states for attractive
extended Hubbard models | We show that the exact ground state for a class of extended Hubbard models
including bond-charge, exchange, and pair-hopping terms, is the Yang
"eta-paired" state for any non-vanishing value of the pair-hopping amplitude,
at least when the on-site Coulomb interaction is attractive enough and the
remaining physical para... | 1995-02-06 | 2009-10-28 | [
"cond-mat"
] | Arianna Montorsi, and David K. Campbell |
cond-mat/9502025 | Neutron scattering and superconducting order parameter in YBa2Cu3O7 | We discuss the origin of the neutron scattering peak at 41 meV observed in
YBa$_2$Cu$_3$O$_7$ below $T_c$. The peak may occur due to spin-flip electron
excitations across the superconducting gap which are enhanced by the
antiferromagnetic interaction between Cu spins. In this picture, the experiment
is most naturally e... | 1995-02-06 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | I. I. Mazin and Victor M. Yakovenko |
cond-mat/9502019 | Universal Parametric Correlations of Eigenfunctions in Chaotic and
Disordered Systems | This paper establishes the universality of parametric correlations of
eigenfunctions in chaotic and weakly disordered systems. We demonstrate this
universality in the framework of the gaussian random matrix process and obtain
predictions for a number of parametric correlators, one of them analytically.
We present numer... | 1995-02-04 | 2016-08-31 | [
"cond-mat",
"chao-dyn",
"nlin.CD",
"nucl-th"
] | Y. Alhassid and H. Attias (Yale University) |
cond-mat/9502014 | The Structure of Fractional Edge States: A Composite Fermion Approach | I study the structure of the two-dimensional electron gas edge in the quantum
Hall regime using the composite fermion approach. The electron density
distribution and the composite fermion energy spectrum are obtained numerically
in Hartree approximation for bulk filling factors $\nu=1,1/3,2/3,1/5$. For a
very sharp edg... | 1995-02-03 | 2016-08-31 | [
"cond-mat"
] | Dmitri B. Chklovskii |
cond-mat/9502018 | Possible Glassiness in a Periodic Long-Range Josephson Array | We present an analytic study of a periodic Josephson array with long-range
interactions in a transverse magnetic field. We find that this system exhibits
a first-order transition into a phase characterized by an extensive number of
states separated by barriers that scale with the system size; the associated
discontinui... | 1995-02-03 | 2016-08-31 | [
"cond-mat"
] | P. Chandra, L. B. Ioffe, D. Sherrington |
cond-mat/9502017 | NEW TOPOLOGIES IN THE PHASE DIAGRAM OF THE SEMI-INFINITE BLUME-CAPEL
MODEL | The phase diagram of the Blume--Capel model on a semi--infinite simple cubic
lattice with a (100) free surface is studied in the pair approximation of the
cluster variation method. Six main topologies are found, of which two are new,
due to the occurrence of a first order surface transition in the phase with
ordered bu... | 1995-02-03 | 2015-06-25 | [
"cond-mat"
] | Carla Buzano and Alessandro Pelizzola |
cond-mat/9502016 | CVM ANALYSIS OF CROSSOVER IN THE SEMI-INFINITE ISING MODEL | The crossover behavior of the semi--infinite three dimensional Ising model is
investigated by means of Pad\'e approximant analysis of cluster variation
method results. We give estimates for ordinary critical as well as for
multicritical exponents, which are in very good agreement with extensive Monte
Carlo simulations. | 1995-02-03 | 2016-08-31 | [
"cond-mat"
] | Alessandro Pelizzola |
cond-mat/9502015 | Theory of single-particle properties of the Hubbard model | It is shown that it is possible to quantitatively explain quantum Monte Carlo
results for the Green's function of the two-dimensional Hubbard model in the
weak to intermediate coupling regime. The analytic approach includes vertex
corrections in a paramagnon-like self-energy. All parameters are determined
self-consiste... | 1995-02-03 | 2016-08-31 | [
"cond-mat"
] | Y.M. Vilk, and A.-M.S. Tremblay |
cond-mat/9502012 | Quantum-Critical Behavior in a Two-Layer Antiferromagnet | We analyze quantum Monte Carlo data in the vicinity of the quantum transition
between a Neel state and a quantum paramagnet in a two-layer, square lattice
spin 1/2 Heisenberg antiferromagnet. The real-space correlation function and
the universal amplitude ratio of the structure factor and the dynamic
susceptibility sho... | 1995-02-02 | 2016-08-31 | [
"cond-mat"
] | Anders W. Sandvik, Andrey V. Chubukov and Subir Sachdev |
cond-mat/9502006 | Electron correlations for ground state properties of group IV
semiconductors | Valence energies for crystalline C, Si, Ge, and Sn with diamond structure
have been determined using an ab-initio approach based on information from
cluster calculations. Correlation contributions, in particular, have been
evaluated in the coupled electron pair approximation (CEPA), by means of
increments obtained for ... | 1995-02-02 | 2016-08-31 | [
"cond-mat"
] | Beate Paulus, Peter Fulde, Hermann Stoll |
cond-mat/9502013 | Spatially Ordered Fractional Quantum Hall States | Fractional quantum Hall liquids can accomodate various degrees of spatial
ordering. The most likely scenarios are a Hall hexatic, Hall smectic, and Hall
crystal, in which respectively orientational, one--dimensional translational,
and two--dimensional translational symmetries are broken. I derive the
long--wavelength p... | 1995-02-02 | 2016-08-31 | [
"cond-mat"
] | Leon Balents (ITP, Santa Barbara) |
cond-mat/9502007 | Superconducting Gap Nodal Surface and Fermi Surface: their partial
overlap in cuprates | Electron correlation in cuprates leads to a global constraint $\sum_{\bf k}
\Delta_{\bf k} = 0$ on the gap function $\Delta_{\bf k}$ resulting in a gap
nodal surface. We give physical arguments supported by numerical results and
discuss some experimental results to argue that correlations also lead to a
local constrain... | 1995-02-02 | 2016-08-31 | [
"cond-mat"
] | G. Baskaran, D. G. Kanhere, Mihir Arjunwadkar and Rahul Basu |
cond-mat/9502004 | Statistical Mechanics of Nonlinear Coherent Structures: Kinks in the
Phi^6 Model | We study the thermodynamics of kinks in the Phi^6 model using a Langevin code
implemented on a massively parallel computer. This code can be used to study
first order dynamical phase transitions which exhibit multiple length and time
scales. The classical statistical mechanics of a 1+1-dimensional field theory
reduces ... | 1995-02-02 | 2016-08-31 | [
"cond-mat",
"hep-ph"
] | Salman Habib and Avadh Saxena |
cond-mat/9502008 | Symmetry of the Gap Function in High-$T_c$ Superconductors | One of the most debated issues related to high-$T_c$ superconductivity is the
symmetry of the Cooper pair or the gap function. In this report, we present
numerical results regarding the gap function in strongly correlated electron
systems using $t-J$ and Hubbard models in one and two dimensions. To this end,
we use exa... | 1995-02-02 | 2016-08-31 | [
"cond-mat"
] | Mihir Arjunwadkar, D. G. Kanhere, G. Baskaran and Rahul Basu |
cond-mat/9502011 | Viscosity of Quantum Hall Fluids | The viscosity of quantum fluids with an energy gap at zero temperature is
non-dissipative and is related to the adiabatic curvature on the space of flat
background metrics (which plays the role of the parameter space). For a quantum
Hall fluid on two dimensional tori this viscosity is computed. In this case the
average... | 1995-02-02 | 2009-10-28 | [
"cond-mat"
] | J.E. Avron, R. Seiler and P.G.Zograf |
cond-mat/9502005 | Kinetics of phase ordering with topological textures | We study the role played by topological textures and antitextures during the
phase ordering of a two-dimensional system described by the discretised
nonlinear O(3) sigma model with purely dissipative dynamics. We identify and
characterise two distinct mechanisms for the decay of the order parameter
variations --- singl... | 1995-02-02 | 2016-08-31 | [
"cond-mat",
"hep-lat",
"hep-th"
] | Martin Zapotocky (University of Illinois at Urbana-Champaign) and
Wojtek Zakrzewski (University of Durham) |
cond-mat/9502010 | The effect of large $U_d$ on the Raman spectrum in the copper-oxide
superconductors | The effect of the charge fluctuations on the electronic and Raman spectrum of
high temperature superconductors is examined, using the slave boson approach to
the large Coulomb repulsion $U_d$ on the copper site. Instead of the saddle
point approximation $\srv{b}\ne 0$ for the slave boson, characteristic for
various $N\... | 1995-02-02 | 2016-08-31 | [
"cond-mat",
"supr-con"
] | H. Niksic, E. Tutis and S. Barisic |
cond-mat/9502009 | Raman spectrum and charge fluctuations in the copper-oxide
superconductors | The effect of the charge fluctuations on the electronic spectrum and the
Raman spectrum of high temperature superconductors is examined within the slave
boson approach. Instead of using the saddle point approximation for slave
bosons, we confine ourselves to the non-crossing approximation (NCA) in summing
the diagrams ... | 1995-02-02 | 2016-08-31 | [
"cond-mat",
"supr-con"
] | H. Niksic, E. Tutis and S. Barisic |
cond-mat/9501139 | ``Hot Spots'' in Quasi-One-Dimensional Organic Conductors | Distribution of the electron scattering rate on the Fermi surface of a
quasi-one-dimensional conductor is calculated for the electron-electron umklapp
interaction. We find that in certain regions on the Fermi surface the
scattering rate is anomalously high. The reason for the existence of these
``hot spots'' is analogo... | 1995-02-01 | 2008-02-03 | [
"cond-mat"
] | Anatoley T. Zheleznyak and Victor M. Yakovenko |
cond-mat/9502002 | THE PHASE DIAGRAM FOR THE SINE-GORDON MODEL WITH TWO UMKLAPP TERMS | We study the Landau free energy for a uniaxial ordering, taking into account
two Umklapp terms of comparable strengths (those of the third and fourth
order). Exploring the analogy with the well-known nonintegrable classical
mechanical problem of two mixed nonlinear resonances, we complete the previous
studies of the co... | 1995-02-01 | 2016-08-31 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | A. Bjelis and M. Latkovic |
cond-mat/9502003 | The Role of Vortices in the Mutual Coupling of Superconducting and
Normal-Metal Films | I propose a possible explanation to a recently observed ``cross-talk'' effect
in metal-insulator-metal trilayers, indicating a sharp peak near a
superconducting transition in one of the metal films. Coulomb interactions are
excluded as a dominant coupling mechanism, and an alternative is suggested,
based on the local f... | 1995-02-01 | 2009-10-28 | [
"cond-mat"
] | Efrat Shimshoni |
cond-mat/9502001 | Coherent Exciton Lasing in ZnSe/ZnCdSe Quantum Wells? | A new mechanism for exciton lasing in ZnSe/ZnCdSe quantum wells is proposed.
Lasing, occurring below the lowest exciton line, may be associated with a
BCS-like condensed (coherent) exciton state. This state is most stable at low
temperatures for densities in the transition region separating the exciton Bose
gas and the... | 1995-02-01 | 2009-10-28 | [
"cond-mat"
] | M.E. Flatte', E. Runge, H. Ehrenreich |
cond-mat/9501138 | Introducing Directionality to Anderson Localization: The Transport
Properties of Quantum Railroads | We present a study of the transport properties of a general class of quantum
mechanical waveguides: Quantum Railroads (QRR). These waveguides are
characterised by having a different number of adiabatic modes which carry
current in one direction along the waveguide to the opposite direction; for
example N forward modes ... | 1995-01-31 | 2016-08-31 | [
"cond-mat"
] | C. Barnes, B. L Johnson, G. Kirczenow |
cond-mat/9501137 | Replica Symmetry Breaking in the Random Replicant Model | We study the statistical mechanics of a model describing the coevolution of
species interacting in a random way. We find that at high competition replica
symmetry is broken. We solve the model in the approximation of one step replica
symmetry breaking and we compare our findings with accurate numerical
simulations. | 1995-01-31 | 2009-10-28 | [
"cond-mat"
] | P Biscari & G Parisi |
cond-mat/9501135 | Destruction of density-wave states by a pseudo-gap in high magnetic
fields: application to (TMTSF)$_2$ClO$_4$ | A model is presented for the destruction of density-wave states in
quasi-one-dimensional crystals by high magnetic fields. The model is consistent
with previously unexplained properties of the organic conductors
(TMTSF)$_2$ClO$_4$ and (BEDT-TTF)$_2$MHg(SCN)$_4$ (M=K,Rb,Tl). As the magnetic
field increases quasi-one-dim... | 1995-01-31 | 2009-10-28 | [
"cond-mat"
] | Ross H. McKenzie |
cond-mat/9501136 | Monte-Carlo study of the reorientation transition in Heisenberg models
with dipole interactions | We simulated the classical two-dimensional anisotropic Heisenberg model with
full long range dipole interaction with an algorithm especially designed for
long range models. The results show strong evidence for a first order
reorientation transition at a temperature $T_R < T_C$ for appropriate
parameters of the model Ha... | 1995-01-31 | 2009-10-28 | [
"cond-mat"
] | A. Hucht, A. Moschel and K.D. Usadel (University of Duisburg) |
cond-mat/9501134 | Non-linear $I(V)$ Characteristics of Luttinger Liquids and Gated Hall
Bars | Non-linear current voltage characteristics of a disordered Luttinger liquid
are calculated using a perturbative formalism. One finds non-universal power
law characteristics of the form $I(V)\sim V^{1/(2\tilde{g}-1)}$ which is valid
both in the superfluid phase when $I$ is small and also in the insulator phase
when $I$ ... | 1995-01-31 | 2016-08-31 | [
"cond-mat"
] | S.R. Renn and D.P. Arovas (Dept. of Physics, UCSD) |
cond-mat/9501133 | On the spin density wave transition in a two dimensional spin liquid | Strongly correlated two dimensional electrons are believed to form a spin
liquid in some regimes of density and temperature. As the density is varied,
one expects a transition from this spin liquid state to a spin density wave
antiferromagnetic state. In this paper we show that it is self-consistent to
assume that this... | 1995-01-30 | 2009-10-28 | [
"cond-mat"
] | B. L. Altshuler, L. B. Ioffe, A. I. Larkin, A. J. Millis |
cond-mat/9501131 | Creep in One Dimension and Phenomenological Theory of Glass Dynamics | The dynamics of a glass transition is discussed in terms of the motion of a
particle in a one dimensional correlated random potential. An exact calculation
of the velocity $V$ under an applied force $f$ demonstrates a variety of
dynamic regimes depending on the range of correlations. In a gaussian potential
with correl... | 1995-01-29 | 2009-10-28 | [
"cond-mat"
] | Pierre Le Doussal, Valerii M. Vinokur |
cond-mat/9501132 | On the correct continuum limit of the functional-integral representation
for the four-slave-boson approach to the Hubbard model: Paramagnetic phase | The Hubbard model with finite on-site repulsion U is studied via the
functional-integral formulation of the four-slave-boson approach by Kotliar and
Ruckenstein. It is shown that a correct treatment of the continuum imaginary
time limit (which is required by the very definition of the functional
integral) modifies the ... | 1995-01-29 | 2016-08-31 | [
"cond-mat"
] | E. Arrigoni and G. C. Strinati |
cond-mat/9501130 | Coulomb Zero-Bias Anomaly: A Semiclassical Calculation | Effective action is proposed for the problem of Coulomb blocking of
tunneling. The approach is well suited to deal with the ``strong coupling''
situation near zero bias, where perturbation theory diverges. By a
semiclassical treatment, we reduce the physics to that of electrodynamics in
imaginary time, and express the ... | 1995-01-28 | 2008-04-12 | [
"cond-mat"
] | L. S. Levitov and A. V. Shytov |
cond-mat/9501129 | Algebraization of difference eigenvalue equations related to $U_q(sl_2)$ | A class of second order difference (discrete) operators with a partial
algebraization of the spectrum is introduced. The eigenfuncions of the
algebraized part of the spectrum are polinomials (discrete polinomials). Such
difference operators can be constructed by means of $U_q(sl_2)$, the quantum
deformation of the $sl_... | 1995-01-27 | 2009-10-28 | [
"cond-mat",
"funct-an",
"hep-th",
"math.FA"
] | P.B.Wiegmann and A.V.Zabrodin |
cond-mat/9501127 | THE TIGHT-BINDING APPROACH TO THE DIELECTRIC RESPONSE IN THE MULTIBAND
SYSTEMS | Starting from the random phase approximation for the weakly coupled multiband
tightly-bounded electron systems, we calculate the dielectric matrix in terms
of intraband and interband transitions. The advantages of this representation
with respect to the usual plane-wave decomposition are pointed out. The
analysis becom... | 1995-01-27 | 2016-08-31 | [
"cond-mat"
] | P. Zupanovic, A. Bjelis, S. Barisic |
cond-mat/9501126 | Relevance of Interlayer Pair Hopping Between Coupled Hubbard Chains | We demonstrate that the hopping of singlet electron pairs between Hubbard
chains is relevant in the renormalization group sense if appropriate
correlations exist between the chains. | 1995-01-27 | 2016-08-31 | [
"cond-mat"
] | S. P. Strong |
cond-mat/9501128 | On Hydrodynamic Diffusion and Velocity Fluctuations in Two--Dimensional
Simulations of Sedimentation | We present a numerical method to deal efficiently with large numbers of
particles in incompressible fluids. The interactions between particles and
fluid are taken into account by a physically motivated ansatz based on locally
defined drag forces. We demonstrate the validity of our approach by performing
numerical simul... | 1995-01-27 | 2016-08-31 | [
"cond-mat"
] | W. Kalthoff, S. Schwarzer, G.H. Ristow and H.J. Herrmann |
cond-mat/9501124 | Superconductivity and Stoichiometry in the BSCCO-family Materials | We report on magnetization, c-axis and ab-plane resistivity, critical
current, electronic band structure and superconducting gap properties. Bulk
measurements and photoemission data were taken on similar samples. | 1995-01-26 | 2009-10-28 | [
"cond-mat"
] | Marshall Onellion (Department of Physics, University of Wisconsin,
Madison, WI 53706) |
cond-mat/9501123 | Ground states of the infinite q-deformed Heisenberg ferromagnet | We set up a general structure for the analysis of ``frustration-free ground
states'', or ``zero-energy states'', i.e., states minimizing each term in a
lattice interaction individually. The nesting of the finite volume ground state
spaces is described by a generalized inductive limit of observable algebras.
The limit s... | 1995-01-26 | 2016-08-31 | [
"cond-mat"
] | C.-T. Gottstein and R.F. Werner |
cond-mat/9501125 | Study of the band--gap shift in CdS films: Influence of thermal
annealing in different atmospheres | We study by photoacoustic spectroscopy the band--gap shift effect of CdS
films. The CdS films were grown by chemical bath deposition and exposed to
different annealing atmospheres over a range of temperature in which the sample
structure is observed to change. We show the band--gap evolution as a function
of temperatur... | 1995-01-26 | 2007-05-23 | [
"cond-mat"
] | S.A. Tomas, et al |
cond-mat/9501118 | s-wave superconductivity from antiferromagnetic spin-fluctuation model
for bilayer materials | It is usually believed that the spin-fluctuation mechanism for
high-temperature superconductivity results in d-wave pairing, and that it is
destructive for the conventional phonon-mediated pairing. We show that in
bilayer materials, due to nearly perfect antiferromagnetic spin correlations
between the planes, the stron... | 1995-01-25 | 2009-10-28 | [
"cond-mat"
] | A.I.Liechtenstein (1), I.I. Mazin (1,2), and O.K. Andersen (1) ((1)
Max-Planck-Institut f\"ur Festk\"orperforschung, Stuttgart, FRG (2)
Geophysical Laboratory, Carnegie Institution of Washington, DC, USA) |
cond-mat/9501122 | Enhancement of Persistent Currents by Hubbard Interactions In Disordered
1D Rings: Avoided Level Crossings Interpretation | We study effects of local electron interactions on the persistent current of
one dimensional disordered rings. For different realizations of disorder we
compute the current as a function of Aharonov-Bohm flux to zeroth and first
orders in the Hubbard interaction. We find that the persistent current is {\em
enhanced} by... | 1995-01-25 | 2009-10-28 | [
"cond-mat"
] | Michael Kamal, Ziad H. Musslimani and Assa Auerbach. (Technion) |
cond-mat/9501121 | MOBILITY IN A ONE-DIMENSIONAL DISORDER POTENTIAL | In this article the one-dimensional, overdamped motion of a classical
particle is considered, which is coupled to a thermal bath and is drifting in a
quenched disorder potential. The mobility of the particle is examined as a
function of temperature and driving force acting on the particle. A framework
is presented, whi... | 1995-01-25 | 2016-08-31 | [
"cond-mat"
] | Stefan SCHEIDL |
cond-mat/9501119 | Spectral weight function for the half-filled Hubbard model: a singular
value decomposition approach | The singular value decomposition technique is used to reconstruct the
electronic spectral weight function for a half-filled Hubbard model with
on-site repulsion $U=4t$ from Quantum Monte Carlo data. A two-band structure
for the single-particle excitation spectrum is found to persist as the lattice
size exceeds the spin... | 1995-01-25 | 2016-08-31 | [
"cond-mat"
] | C.E. Creffield, E.G. Klepfish, E.R. Pike and Sarben Sarkar |
cond-mat/9501120 | ABSENCE OF REENTRANCE IN THE TWO-DIMENSIONAL XY-MODEL WITH RANDOM PHASE
SHIFT | We show, that the 2D XY-model with random phase shifts exhibits for low
temperature and small disorder a phase with quasi-long-range order, and that
the transition to the disordered phase is {\it not} reentrant. These results
are obtained by heuristic arguments, an analytical renormalization group
calculation, and a nu... | 1995-01-25 | 2016-08-31 | [
"cond-mat"
] | Thomas NATTERMANN, Stefan SCHEIDL, Sergey E. KORSHUNOV and Mai Suan LI |
cond-mat/9501113 | Localization in Semiconductor Quantum Wire Nanostructures | Localization properties of quasi-one dimensional quantum wire nanostructures
are investigated using the transfer matrix-Lyapunov exponent technique. We
calculate the localization length as a function of the effective mean-field
mobility assuming the random disorder potential to be arising from
dopant-induced short-rang... | 1995-01-24 | 2016-08-31 | [
"cond-mat"
] | Dongzi Liu and S. Das Sarma |
cond-mat/9501114 | Monte Carlo simulation and global optimization without parameters | We propose a new ensemble for Monte Carlo simulations, in which each state is
assigned a statistical weight $1/k$, where $k$ is the number of states with
smaller or equal energy. This ensemble has robust ergodicity properties and
gives significant weight to the ground state, making it effective for hard
optimization pr... | 1995-01-24 | 2016-08-31 | [
"cond-mat"
] | Bobby Hesselbo and R. B. Stinchcombe |
cond-mat/9501112 | Superconducting Order Parameter in Bi-Layer Cuprates: Occurrence of $\pi
$ Phase Shifts in Corner Junctions | We study the order parameter symmetry in bi-layer cuprates such as YBaCuO,
where interesting $\pi$ phase shifts have been observed in Josephson junctions.
Taking models which represent the measured spin fluctuation spectra of this
cuprate, as well as more general models of Coulomb correlation effects, we
classify the a... | 1995-01-24 | 2016-08-31 | [
"cond-mat"
] | D. Z. Liu, K. Levin, and J. Maly |
cond-mat/9501115 | Haldane Gap and Hidden Order in the S=2 Antiferromagnetic Quantum Spin
Chain | We have investigated Haldane's conjecture for the S=2 isotropic
antiferromagnetic quantum spin chain with nearest-neighbor exchange J. Using a
density matrix renormalization group algorithm for chains up to L=350 spins, we
find in the thermodynamic limit a finite spin gap of Delta = 0.085(5)J and a
finite spin-spin cor... | 1995-01-24 | 2014-10-13 | [
"cond-mat"
] | U. Schollwoeck, Th. Jolicoeur |
cond-mat/9501116 | Ferromagnetism in the Hubbard model: instability of the Nagaoka state on
the triangular, honeycomb and kagome lattices | In order to analyse the lattice dependence of ferromagnetism in the
two-dimensional Hubbard model we investigate the instability of the fully
polarized ferromagnetic ground state (Nagaoka state) on the triangular,
honeycomb and kagome lattices. We mainly focus on the local instability,
applying single spin flip variati... | 1995-01-24 | 2016-08-31 | [
"cond-mat"
] | Thoralf Hanisch, Burkhard Kleine, Afra Ritzl, Erwin Mueller-Hartmann |
cond-mat/9501117 | Sign reversal of the order parameter in s-wave superconductors | We show that in a superconductor where two or more bands cross the Fermi
level it is possible, in the framework of the conventional (s-wave) BCS theory,
that the sign of the superconducting gap is different on the different sheets
of the Fermi surface. At least one of two conditions has to be satisfied: (1)
The interba... | 1995-01-24 | 2009-10-28 | [
"cond-mat"
] | A.A.Golubov, I.I. Mazin |
cond-mat/9501107 | Problems With the Vortex-Boson Mapping in 1+1 Dimensions | Using the well known boson mapping, we relate the transverse magnetic
susceptibility of a system of flux vortices in 1+1 dimensions to an
appropriately defined conductivity of a one-dimensional boson system. The tilt
response for a system free of disorder is calculated directly, and it is found
that a subtle order of l... | 1995-01-23 | 2016-08-31 | [
"cond-mat"
] | Leon Balents and Steven H. Simon |
cond-mat/9501106 | Scaling Theory of the Integer Quantum Hall Effect | The scaling theory of the transitions between plateaus of the Hall
conductivity in the integer Quantum Hall effect is reviewed. In the model of
two-dimensional noninteracting electrons in strong magnetic fields the
transitions are disorder-induced localization-delocalization transitions. While
experimental and analytic... | 1995-01-23 | 2016-08-31 | [
"cond-mat"
] | Bodo Huckestein |
cond-mat/9501105 | The effect of the Coulomb interaction on the mesoscopic persistent
current | The persistent current in three-dimensional mesoscopic rings is investigated
numerically. The model is tight-binding one with random site-energies and
interaction between electrons. The self-consistent Hartree-Fock approximation
is adopted for the interaction between electrons, and models with up to
$6\times 6\times 20... | 1995-01-23 | 2016-08-31 | [
"cond-mat"
] | D. Yoshioka and H. Kato |
cond-mat/9501108 | Search for the Nondimerized Quantum Nematic Phase in the Spin-1 Chain | Chubukov's proposal concerning the possibility of a nondimerized quantum
nematic phase in the ground-state phase diagram of the bilinear-biquadratic
spin-1 chain is studied numerically. Our results do not support the existence
of this phase, but they rather indicate a direct transition from the
ferromagnetic into the d... | 1995-01-23 | 2009-10-28 | [
"cond-mat"
] | G. F\'ath and J. S\'olyom (Research Institute for Solid State Physics,
Budapest, Hungary) |
cond-mat/9501111 | Calculation of Effective Coulomb Interaction for $Pr^{3+}$, $U^{4+}$,
and $UPt_3$ | In this paper, the Slater integrals for a screened Coulomb interaction of the
the Yukawa form are calculated and by fitting the Thomas-Fermi wavevector, good
agreement is obtained with experiment for the multiplet spectra of $Pr^{3+}$
and $U^{4+}$ ions. Moreover, a predicted multiplet spectrum for the heavy
fermion sup... | 1995-01-23 | 2016-08-31 | [
"cond-mat"
] | M. R. Norman |
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