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/9406108 | Nuclear Spin-Lattice Relaxation Induced by Thermally Fluctuating Flux
Lines in Type-II Superconductors | Thermal motion of the flux lines (FL) gives rise to fluctuating magnetic
fields. These dynamic fields couple to the nuclei in the sample and relax the
nuclear spins. Based on a model of harmonic fluctuations, we provide a
theoretical description of the nuclear spin-lattice relaxation (NSLR) process
due to the fluctuati... | 1994-06-27 | 2009-10-22 | [
"cond-mat"
] | Lei Xing and Yia-Chung Chang (Department of Physics and Materials
Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL) |
cond-mat/9406099 | Quantum fluctuations of $D_{5d}$ polarons on $C_{60}$ molecules | The dynamic Jahn-Teller splitting of the six equivalent $D_{5d}$ polarons due
to quantum fluctuations is studied in the framework of the Bogoliubov-de Gennes
formalism. The tunneling induced level splittings are determined to be $^2
T_{1u} \bigoplus ^2 T_{2u}$ and $^1 A_g \bigoplus ^1 H_g$ for $C_{60}^{1-}$ and
$C_{60}... | 1994-06-24 | 2009-10-22 | [
"cond-mat"
] | Chui-Lin Wang, Wen-Zheng Wang, Yu-Liang Liu, Zhao-Bin Su, and Lu Yu |
cond-mat/9406098 | Spin bags in the doped t-J model | We present a nonperturbative method for deriving a quasiparticle description
of the low-energy excitations in the t-J model for strongly correlated
electrons. Using the exact diagonalization technique we evaluated exactly the
spectral functions of composite operators which describe an electron or hole
dressed by antife... | 1994-06-24 | 2009-10-22 | [
"cond-mat"
] | R. Eder and Y. Ohta (Department of Applied Physics, Nagoya University,
Nagoya 464-01, Japan) |
cond-mat/9406097 | Collective modes of spin, density, phase and amplitude in exotic
superconductors | The equations of motion of pair-like excitations in the superconducting state
are studied for various types of pairing using the random phase approximation.
The collective modes are computed of a layered electron gas described by a
$t-t'$ tight-binding band, where the electrons experience besides the
long-range Coulomb... | 1994-06-24 | 2009-10-22 | [
"cond-mat"
] | D. van der Marel |
cond-mat/9406096 | Fine Structure and Fractional Aharonov-Bohm Effect | We find a fine structure in the Aharonov-Bohm effect, characterized by the
appearence of a new type of periodic oscillations having smaller fractional
period and an amplitude, which may compare with the amplitude of the
conventional Aharonov-Bohm effect. Specifically, at low density or strong
coupling on a Hubbard ring... | 1994-06-24 | 2009-10-22 | [
"cond-mat"
] | F. V. Kusmartsev and Minoru Takahashi |
cond-mat/9406101 | Low-Temperature Spin Diffusion in a Spin-Polarized Fermi Gas | We present a finite temperature calculation of the transverse spin-diffusion
coefficient, $D_\bot$, in a dilute degenerate Fermi gas in the presence of a
small external magnetic field, $H$. While the longitudinal diffusion
coefficient displays the conventional low-temperature Fermi-liquid behavior,
$D_\parallel \propto... | 1994-06-24 | 2009-10-22 | [
"cond-mat"
] | D. I. Golosov and A. E. Ruckenstein |
cond-mat/9406100 | Renormalization Group Derivation of the Localization Length Exponent in
the Integer Quantum Hall Effect | We compute, neglecting possible effects of subleading irrelevant couplings,
the localization length exponent in the integer quantum Hall effect, for the
case of white noise random potentials. The result obtained is $\nu=2$ for all
Landau levels. Our approach consists in a renormalization group transformation
of Landau ... | 1994-06-24 | 2009-10-22 | [
"cond-mat"
] | L. Moriconi |
cond-mat/9406090 | Long range Coulomb forces and the behaviour of the chemical potential of
electrons in metals at a second order phase transition | We give a general thermodynamic analyzis of the behaviour of the chemical
potential of electrons in metals at a second order phase transition, including
in our analysis the effect of long range Coulomb forces. It is shown, that this
chemical potential can have a kink at T$_c$, both for fixed sample volume and
fixed ext... | 1994-06-23 | 2009-10-22 | [
"cond-mat"
] | D. van der Marel, D. I. Khomskii, G. M. Eliashberg |
cond-mat/9406094 | Coherent States of Two-dimensional Josephson Junction Networks | We have investigated numerically the phase--locking behavior of
two-dimensional Josephson junction arrays,taking into account a finite
inductance ($l\stackrel{>}{\sim}1$) of the unit cell and external magnetic
fields. Within this model we demonstrate the existence of multi--valued {\it
I--V} curves of the network. Diff... | 1994-06-23 | 2009-10-22 | [
"cond-mat"
] | W. Krech and K. Yu. Platov |
cond-mat/9406092 | The XY Model and the Three-state Antiferromagnetic Potts model in Three
Dimensions: Critical Properties from Fluctuating Boundary Conditions | We present the results of a Monte Carlo study of the three-dimensional XY
model and the three-dimensional antiferromagnetic three-state Potts model. In
both cases we compute the difference in the free energies of a system with
periodic and a system with antiperiodic boundary conditions in the
neighbourhood of the criti... | 1994-06-23 | 2009-10-22 | [
"cond-mat"
] | A.P. Gottlob and M.Hasenbusch |
cond-mat/9406095 | Statistical properties and statistical interaction for particles with
spin: Hubbard model in one dimension and statistical spin liquid | We derive the statistical distribution functions for the Hubbard chain with
infinite Coulomb repulsion among particles and for the statistical spin liquid
with an arbitrary magnitude of the local interaction in momentum space.
Haldane's statistical interaction is derived from an exact solution for each of
the two model... | 1994-06-23 | 2009-10-22 | [
"cond-mat"
] | Krzysztof Byczuk and Jozef Spalek |
cond-mat/9406091 | Renormalized expansion for matrix models | Matrix models of 2d quantum gravity coupled to matter field are investigated
by the renormalized perturbational method, in which the matrix model
Hamiltonian is represented by the equivalent vector model. By the saddle point
method, the renormalization group beta-function is obtained in the successive
approximation. | 1994-06-23 | 2007-05-23 | [
"cond-mat"
] | Shinobu Hikami |
cond-mat/9406093 | Helicity Modulus and Effective Hopping in the Two-Dimensional Hubbard
Model Using Slave-Boson Methods | The slave-boson mean-field method is used to study the two-dimensional
Hubbard model. A magnetic phase diagram allowing for paramagnetism, weak- and
strong ferromagnetism and antiferromagnetism, including all continuous and
first-order transitions, is constructed and compared to the corresponding phase
diagram using th... | 1994-06-23 | 2009-10-22 | [
"cond-mat"
] | P.J.H. Denteneer and M. Blaauboer (Instituut-Lorentz, University of
Leiden, The Netherlands) |
cond-mat/9406089 | Dynamical Phase Transition in One Dimensional Traffic Flow Model with
Blockage | Effects of a bottleneck in a linear trafficway is investigated using a simple
cellular automaton model. Introducing a blockage site which transmit cars at
some transmission probability into the rule-184 cellular automaton, we observe
three different phases with increasing car concentration: Besides the free
phase and t... | 1994-06-23 | 2009-10-22 | [
"cond-mat"
] | S. Yukawa, M. Kikuchi, and S.-I. Tadaki |
cond-mat/9406088 | Dynamics of Electric Field Domains and Oscillations of the Photocurrent
in a Simple Superlattice Model | A discrete model is introduced to account for the time-periodic oscillations
of the photocurrent in a superlattice observed by Kwok et al, in an undoped 40
period AlAs/GaAs superlattice. Basic ingredients are an effective negative
differential resistance due to the sequential resonant tunneling of the
photoexcited carr... | 1994-06-22 | 2009-10-22 | [
"cond-mat"
] | L.L. Bonilla, J. Galan, J.A. Cuesta, F.C. Martinez and J.M. Molera |
cond-mat/9406087 | Damping mechanism for the strongly renormalized $c$-axis charge
transport in high-$T_c$ cuprate superconductors | We analyze the $c$-axis infrared reflectivity of
La$_{1.85}$Sr$_{0.15}$CuO$_4$ single crystals. The plasma edge near 6 meV,
observed below $T_c$, is due to Cooper-pair tunneling. This low value of the
plasma edge is consistent with the $c$-axis plasma frequency ($\nu_p$) obtained
from LDA calculations ($>0.1$ eV) if we... | 1994-06-22 | 2009-10-22 | [
"cond-mat"
] | Jae H. Kim, H. S. Somal, and D. van der Marel |
cond-mat/9406082 | Closure of Macroscopic Laws in Disordered Spin Systems: A Toy Model | We use a linear system of Langevin spins with disordered interactions as an
exactly solvable toy model to investigate a procedure, recently proposed by
Coolen and Sherrington, for closing the hierarchy of macroscopic order
parameter equations in disordered spin systems. The closure procedure, based on
the removal of mi... | 1994-06-21 | 2009-10-22 | [
"cond-mat"
] | A.C.C. Coolen and S. Franz |
cond-mat/9406084 | Asymptotic Bethe-Ansatz results for a Hubbard Chain with 1/sinh-Hopping | We investigate spin-1/2 electrons with local Hubbard interaction and variable
range hopping amplitudes which decay like~$\sinh(\kappa)/\sinh(\kappa r)$.
Assuming integrability the Asymptotic Bethe Ansatz approach allows us to derive
the generalized Lieb-Wu integral equations from the two-particle phase shift.
Due to th... | 1994-06-21 | 2012-07-07 | [
"cond-mat"
] | F. Gebhard and P.-A. Bares (ILL Grenoble) |
cond-mat/9406085 | Three Body bound-states and the development of odd frequency pairing | We propose that the development of odd-frequency superconductivity is driven
by the collective formation of neutral three body bound-states. Using a
three-body bound-state ansatz we develop a mean-field theory for odd-frequency
pairing within the Kondo Lattice model. Three body bound-state formation leads
to the format... | 1994-06-21 | 2009-10-22 | [
"cond-mat"
] | P. Coleman (Rutgers) E. Miranda (Rutgers) and A. Tsvelik (Oxford) |
cond-mat/9406086 | Crossover Scaling Functions in One Dimensional Dynamic Growth Models | The crossover from Edwards-Wilkinson ($s=0$) to KPZ ($s>0$) type growth is
studied for the BCSOS model. We calculate the exact numerical values for the
$k=0$ and $2\pi/N$ massgap for $N\leq 18$ using the master equation. We predict
the structure of the crossover scaling function and confirm numerically that
$m_0\simeq ... | 1994-06-21 | 2009-10-22 | [
"cond-mat"
] | John Neergaard and Marcel den Nijs |
cond-mat/9406081 | A Note on Dressed S-Matrices in Models with Long-Range Interactions | The {\sl dressed} Scattering matrix describing scattering of quasiparticles
in various models with long-range interactions is evaluated by means of
Korepin's method\upref vek1/. For models with ${1\over\sin^2(r)}$-interactions
the S-matrix is found to be a momentum-independent phase, which clearly
demonstrates the idea... | 1994-06-19 | 2009-10-22 | [
"cond-mat"
] | Fabian H.L. Essler |
cond-mat/9406080 | Multichannel Kondo impurities in superconductors | We discuss the effect of multichannel Kondo impurities on superconductivity.
In the strong coupling regime such impurities are pairbreakers, in contrast to
the ordinary Kondo effect. Measurements of $T_c$-suppression may help in
identifying impurities displaying this more exotic exchange coupling to the
conduction band... | 1994-06-18 | 2009-10-22 | [
"cond-mat"
] | L.S. Borkowski and P.J. Hirschfeld |
cond-mat/9406077 | An Upper Bound for the Spin-Wave Spectrum of the Heisenberg
Antiferromagnet | We study the spin-wave spectrum of the Heisenberg antiferromagnet on a
bipartite lattice. The spin-wave spectrum on a N\'eel-ordered ground state is
bounded as $\varepsilon (k) \le c |k| $, where $c$ gives an upper bound for the
spin-wave velocity. In the large-$S$ limit, the upper bound $c$ coincides with
the result o... | 1994-06-17 | 2009-10-22 | [
"cond-mat"
] | Tsutomu Momoi |
cond-mat/9406079 | Absence of localization and large dc conductance in random superlattices
with correlated disorder | We study how the influence of structural correlations in disordered systems
manifests itself in experimentally measurable magnitudes, focusing on dc
conductance of semiconductor superlattices with general potential profiles. We
show that the existence of bands of extended states in these structures gives
rise to very n... | 1994-06-17 | 2009-10-22 | [
"cond-mat"
] | Enrique Diez, Angel Sanchez, and Francisco Dominguez-Adame |
cond-mat/9406078 | Bundles of Interacting Strings in Two Dimensions | Bundles of strings which interact via short-ranged pair potentials are
studied in two dimensions. The corresponding transfer matrix problem is solved
analytically for arbitrary string number N by Bethe ansatz methods. Bundles
consisting of N identical strings exhibit a unique unbinding transition. If the
string bundle ... | 1994-06-17 | 2009-10-22 | [
"cond-mat"
] | C. Hiergeist, M. Lassig and R. Lipowsky |
cond-mat/9406076 | Density matrix renormalisation group study of the correlation function
of the bilinear-biquadratic spin-1 chain | Using the recently developed density matrix renormalization group approach,
we study the correlation function of the spin-1 chain with quadratic and
biquadratic interactions. This allows us to define and calculate the
periodicity of the ground state which differs markedly from that in the
classical analogue. Combining ... | 1994-06-17 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | R. J. Bursill, T. Xiang, G. A. Gehring |
cond-mat/9406073 | Charge gap in the one--dimensional dimerized Hubbard model at
quarter-filling | We propose a quantitative estimate of the charge gap that opens in the
one-dimensional dimerized Hubbard model at quarter-filling due to dimerization,
which makes the system effectively half--filled, and to repulsion, which
induces umklapp scattering processes. Our estimate is expected to be valid for
any value of the ... | 1994-06-17 | 2009-02-27 | [
"cond-mat"
] | K. Penc and F. Mila |
cond-mat/9406074 | Replica Field Theory for Deterministic Models (II): A Non-Random Spin
Glass with Glassy Behavior | We introduce and study a model which admits a complex landscape without
containing quenched disorder. Continuing our previous investigation we
introduce a disordered model which allows us to reconstruct all the main
features of the original phase diagram, including a low $T$ spin glass phase
and a complex dynamical beh... | 1994-06-17 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | Enzo Marinari, Giorgio Parisi and Felix Ritort |
cond-mat/9406075 | Disorder effect in low dimensional superconductors | The quasiparticle density of states (DOS), the energy gap, the superfluid
density $\rho_s$, and the localization effect in the s- and d-wave
superconductors with non-magnetic impurity in two dimensions (2D) are studied
numerically. For strong (unitary) scatters, we find that it is the range of the
scattering potential ... | 1994-06-17 | 2009-10-22 | [
"cond-mat"
] | T Xiang and J M Wheatley |
cond-mat/9406072 | Integrable su(2)-invariant spin chains and the Haldane conjecture | We perform a systematic exact algebraic search for integrable spin-S chains
which are isotropic in spin space, i.e. are su(2)-invariant. The families of
spin chains found for S < 14 support recent arguments in favour of the complete
classification of all such integrable chains. The integrable families of spin
chains ar... | 1994-06-17 | 2007-05-23 | [
"cond-mat"
] | M.T. Batchelor and C.M. Yung |
cond-mat/9406069 | Optical absorption in paired correlated random lattices | Optical absorption in a random one-dimensional lattice in the presence of
paired correlated disorder is studied. The absorption line shape is evaluated
by solving the microscopic equations of motion of the Frenkel-exciton problem
in the lattice. We find that paired correlation causes the occurrence of
well-defined char... | 1994-06-16 | 2009-10-22 | [
"cond-mat"
] | Francisco Dominguez-Adame, Enrique Macia, and Angel Sanchez |
cond-mat/9406068 | Two-Loop Renormalization Group Analysis of the
Burgers-Kardar-Parisi-Zhang Equation | A systematic analysis of the Burgers--Kardar--Parisi--Zhang equation in $d+1$
dimensions by dynamic renormalization group theory is described. The fixed
points and exponents are calculated to two--loop order. We use the dimensional
regularization scheme, carefully keeping the full $d$ dependence originating
from the an... | 1994-06-16 | 2011-12-08 | [
"cond-mat"
] | Erwin Frey and Uwe Claus T\"auber |
cond-mat/9406071 | Solvent-induced organization: A physical model of folding myoglobin | The essential features of the in vitro refolding of myoglobin are expressed
in a solvable physical model. Alpha helices are taken as the fundamental
collective coordinates of the system, while the refolding is assumed to be
mainly driven by solvent-induced hydrophobic forces. A quantitative model of
these forces is dev... | 1994-06-16 | 2007-05-23 | [
"cond-mat",
"chem-ph",
"hep-lat",
"q-bio"
] | David J.E. Callaway |
cond-mat/9406070 | Energy spectra of quasiperiodic systems via information entropy | We study the relationship between the electronic spectrum structure and the
configurational order of one-dimensional quasiperiodic systems. We take the
Fibonacci case as an specific example, but the ideas outlined here may be
useful to accurately describe the energy spectra of general quasiperiodic
systems of technolog... | 1994-06-16 | 2009-10-22 | [
"cond-mat"
] | Enrique Macia, Francisco Dominguez-Adame, and Angel Sanchez |
cond-mat/9406067 | Fluctuation Effects on Microphase Separation in Random Copolymers | We study random copolymers consisted of two kinds of monomers with attraction
between similar kinds. The mean field analysis of this system indicates a
continuous phase transition into a phase with periodic microdomain structure.
It is shown that the inverse of the renormalized propagator has a minimum at
non-zero wave... | 1994-06-15 | 2009-10-22 | [
"cond-mat"
] | A.M. Gutin, C.D. Sfatos, E.I.Shakhnovich |
cond-mat/9406062 | Analytical solution of generalized Burton--Cabrera--Frank equations for
growth and post--growth equilibration on vicinal surfaces | We investigate growth on vicinal surfaces by molecular beam epitaxy making
use of a generalized Burton--Cabrera--Frank model. Our primary aim is to
propose and implement a novel analytical program based on a perturbative
solution of the non--linear equations describing the coupled adatom and dimer
kinetics. These equat... | 1994-06-15 | 2009-10-22 | [
"cond-mat"
] | S. Harris and P. \v{S}milauer |
cond-mat/9406065 | Microwave--Driven SET--Box with Superconducting Island | The effect of a high--frequency microwave irradiation on the averaged
stationary charge in a single--electron tunneling box (SET--box) with
superconducting island is investigated. The resulting $\langle Q\rangle$--$Q_g$
characteristics are modified compared with those from the well--known constant
voltage--driven box. ... | 1994-06-15 | 2009-10-22 | [
"cond-mat"
] | A. H\"adicke and W. Krech |
cond-mat/9406061 | Symmetry dependence of phonon lineshapes in superconductors with
anisotropic gaps | The temperature dependence below $T_{c}$ of the lineshape of optical phonons
of different symmetry as seen in Raman scattering is investigated for
superconductors with anisotropic energy gaps. It is shown that the symmetry of
the electron-phonon vertex produces non-trivial couplings to an anisotropic
energy gap which l... | 1994-06-15 | 2009-10-22 | [
"cond-mat"
] | T. P. Devereaux |
cond-mat/9406063 | Third-order density-functional perturbation theory: a practical
implementation with applications to anharmonic couplings in Si | We present a formulation of third-order density-functional perturbation
theory which is manifestly invariant with respect to unitary transfomations
within the occupied-states manifold and is particularly suitable for a
practical implementation of the so called `2n+1' theorem. Our implementation is
demonstrated with the... | 1994-06-15 | 2009-10-22 | [
"cond-mat"
] | Alberto Debernardi and Stefano Baroni |
cond-mat/9406064 | Validity of the rigid band picture for the t-J model | We present an exact diagonalization study of the doping dependence of the
single particle Green's function in 16, 18 and 20 site clusters of t-J model.
We find evidence for rigid-band behaviour starting from the half-filled case:
upon doping, the topmost states of the quasiparticle band observed in the
photoemisson spe... | 1994-06-15 | 2009-10-22 | [
"cond-mat"
] | R. Eder, Y. Ohta and T. Shimozato (Department of Applied Physics,
Nagoya University, Nagoya 464-01, Japan) |
cond-mat/9406066 | Scaling of Heteroepitaxial Island Sizes | Monte Carlo simulations of an atomistic solid-on-solid model are used to
study the effect of lattice misfit on the distribution of two-dimensional
islands sizes as a function of coverage $\Theta$ in the submonolayer
aggregation regime of epitaxial growth. Misfit promotes the detachment of atoms
from the perimeter of la... | 1994-06-15 | 2009-10-22 | [
"cond-mat"
] | C. Ratsch, A. Zangwill, and P. \v{S}milauer |
cond-mat/9406060 | The Conical Point in the Ferroelectric Six-Vertex Model | We examine the last unexplored regime of the asymmetric six-vertex model: the
low-temperature phase of the so-called ferroelectric model. The original
publication of the exact solution, by Sutherland, Yang, and Yang, and various
derivations and reviews published afterwards, do not contain many details about
this regime... | 1994-06-14 | 2009-10-22 | [
"cond-mat"
] | Dirk Jan Bukman and Joel D. Shore |
cond-mat/9406058 | Capacitance spectroscopy in quantum dots: Addition spectra and decrease
of tunneling rates | A theoretical study of single electron capacitance spectroscopy in quantum
dots is presented. Exact diagonalizations and the unrestricted Hartree-Fock
approximation have been used to shed light over some of the unresolved aspects.
The addition spectra of up to 15 electrons is obtained and compared with the
experiment. ... | 1994-06-14 | 2009-10-22 | [
"cond-mat"
] | J.J. Palacios, L. Martin-Moreno, G. Chiappe, E. Louis, and C. Tejedor |
cond-mat/9406057 | Universal Conductance Distribution in the Quantum Size Regime | We study the conductance (g) distribution function of an ensemble of isolated
conducting rings, with an Aharonov--Bohm flux. This is done in the discrete
spectrum limit, i.e., when the inelastic rate, frequency and temperature are
all smaller than the mean level spacing. Over a wide range of g the
distribution function... | 1994-06-14 | 2009-10-22 | [
"cond-mat"
] | Alex Kamenev and Yuval Gefen |
cond-mat/9406056 | Quantum Chaos and Statistical Mechanics | We briefly review the well known connection between classical chaos and
classical statistical mechanics, and the recently discovered connection between
quantum chaos and quantum statistical mechanics. | 1994-06-14 | 2009-10-22 | [
"cond-mat",
"chao-dyn",
"gr-qc",
"hep-ph",
"hep-th",
"nlin.CD"
] | Mark Srednicki |
cond-mat/9406055 | Shakeup Effects on Photoluminescence from the Wigner Crystal | We develop a method to compute shakeup effects on photoluminescence in a
Wigner crystal from localized holes. Our method treats the lattice electrons
and the tunneling electron on an equal footing, and uses a quantum-mechanical
calculation of the collective modes that is realistic throughout the Brillouin
zone. We find... | 1994-06-14 | 2016-08-31 | [
"cond-mat"
] | D.Z. Liu, H.A. Fertig, and S. Das Sarma |
cond-mat/9406059 | Elementary Excitations of One-Dimensional t-J Model with Inverse-Square
Exchange | We identify exact excitation content of the intermediate states for the
one-particle Green's functions, spin-spin and (charge) density-density
correlation functions of the periodic one-dimensional $t$-$J$ model with
inverse square exchange. The excitations consist of neutral $S=1/2$ spinons and
spinless (charge $-e$) h... | 1994-06-14 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | Z. N. C. Ha and F. D. M. Haldane |
cond-mat/9406052 | Coulomb Drag as a Probe of Coupled Plasmon Modes in Parallel Quantum
Wells | We show theoretically that the Coulomb drag rate between two parallel
quasi-two-dimensional electron gases is substantially enhanced by the coupled
acoustic and optic plasmon modes of the system at temperatures $T \gtrsim
0.2T_F$ (where $T_F$ is the Fermi temperature) for experimentally relevant
parameters. The acousti... | 1994-06-13 | 2009-10-22 | [
"cond-mat"
] | Karsten Flensberg and Ben Yu-Kuang Hu |
cond-mat/9406053 | Off equilibrium dynamics and aging in unfrustrated systems | We analyse the Langevin dynamics of the random walk, the scalar field, the
X-Y model and the spinoidal decomposition. We study the deviations from the
equilibrium dynamics theorems (FDT and homogeneity), the asymptotic behaviour
of the systems and the aging phenomena. We compare the results with the
dynamical behaviour... | 1994-06-13 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | L. F. Cugliandolo, J. Kurchan and G. Parisi |
cond-mat/9406050 | Random Hydrophilic-Hydrophobic Copolymers | We study a single statistical amphiphilic copolymer chain AB in a selective
solvent (e.g.water). Two situations are considered. In the annealed case,
hydrophilic (A) and hydrophobic (B) monomers are at local chemical equilibrium
and both the fraction of A monomers and their location along the chain can
vary, whereas in... | 1994-06-13 | 2009-10-22 | [
"cond-mat"
] | T. Garel, L. Leibler, H. Orland |
cond-mat/9406051 | On the TAP approach to the spherical p-spin SG model | In this letter we analyze the TAP approach to the spherical $p$-spin spin
glass model in zero external field. The TAP free energy is derived by summing
up all the relevant diagrams for $N\to\infty$ of a diagrammatic expansion of
the free energy. We find that if the multiplicity of the TAP solutions is taken
into accoun... | 1994-06-13 | 2007-05-23 | [
"cond-mat"
] | A. Crisanti and H.-J. Sommers |
cond-mat/9406054 | Physical tests for Random Numbers in Simulations | We propose three physical tests to measure correlations in random numbers
used in Monte Carlo simulations. The first test uses autocorrelation times of
certain physical quantities when the Ising model is simulated with the Wolff
algorithm. The second test is based on random walks, and the third on blocks of
n successiv... | 1994-06-13 | 2009-10-22 | [
"cond-mat",
"adap-org",
"hep-lat",
"nlin.AO"
] | I. Vattulainen, T.Ala-Nissila and K. Kankaala |
cond-mat/9406049 | Phase transitions in BaTiO$_3$ from first principles | We develop a first-principles scheme to study ferroelectric phase transitions
for perovskite compounds. We obtain an effective Hamiltonian which is fully
specified by first-principles ultra-soft pseudopotential calculations. This
approach is applied to BaTiO$_3$, and the resulting Hamiltonian is studied
using Monte Car... | 1994-06-10 | 2009-10-22 | [
"cond-mat"
] | W. Zhong, David Vanderbilt, and K. M. Rabe |
cond-mat/9406048 | Statistical Properties of Level Widths and Conductance Peaks in a
Quantum Dot | We study the statistics of level widths of a quantum dot with extended
contacts in the absence of time-reversal symmetry. The widths are determined by
the amplitude of the wavefunction averaged over the contact area. The
distribution function of level widths for a two-point contact is evaluated
exactly. The distributio... | 1994-06-10 | 2009-10-22 | [
"cond-mat"
] | E. R. Mucciolo, V. N. Prigodin, and B. L. Altshuler |
cond-mat/9406047 | Spectra of Quantum Chains without the Yang-Baxter Equation | We study one-dimensional reaction-diffusion models described by master
equations and their associated two-state quantum Hamiltonians. By choosing
appropriate rates, the equations of motion decouple into certain subsets. We
solve the first subset which has a close relation to the problem of lattice
electrons in an elect... | 1994-06-10 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | I. Peschel, V. Rittenberg and U. Schultze |
cond-mat/9406041 | Folding Transition of the Triangular Lattice | We study the problem of folding of the regular triangular lattice in the
presence of bending rigidity K and magnetic field h (conjugate to the local
normal vectors to the triangles). A numerical study of the transfer matrix of
the problem shows the existence of three first order transition lines in the
(K,h) plane sepa... | 1994-06-08 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | P. Di Francesco and E. Guitter |
cond-mat/9406045 | Critical and bicritical properties of Harper's equation with next
nearest neighbor coupling | We have exploited a variety of techniques to study the universality and
stability of the scaling properties of Harper's equation, the equation for a
particle moving on a tight-binding square lattice in the presence of a gauge
field, when coupling to next nearest sites is added. We find, from numerical
and analytical st... | 1994-06-08 | 2009-10-22 | [
"cond-mat"
] | J. H. Han, D. J. Thouless, H. Hiramoto and M. Kohmoto |
cond-mat/9406042 | Mean-field phase diagrams of $AT_2X_2$ compounds | Magnetic-field -- temperature phase diagrams of the axial
next-nearest-neighbor Ising model are calculated within the framework of a
Landau-type expansion of the free energy derived from molecular-field theory.
Good qualitative agreement is found with recently reported results on
body-centered-tetragonal $UPd_2Si_2$. T... | 1994-06-08 | 2009-10-22 | [
"cond-mat"
] | M.L. Plumer (Centre de Recherche en Physique du Solide et
D\'epartement de Physique, Universit\'e de Sherbrooke, Sherbrooke, Qu\'ebec,
Canada) |
cond-mat/9406040 | Flux-Cutting in YBa$_{2}$Cu$_{3}$O$_{7-\delta}$ single crystals:
Experiment and Phenomenological model | We measured the current induced loss of vortex correlation in YBCO crystals
using the pseudo DC flux transformer geometry. We find that the current
$I_{cut}$ at which the top and bottom voltage differ is a linear function of
temperature independent of pinning. Although the vortex correlation length at
$I_{cut}$ coincid... | 1994-06-08 | 2009-10-22 | [
"cond-mat"
] | D. L\'opez, G. Nieva, F. de la Cruz, H.J. Jensen and D.O'Kane |
cond-mat/9406043 | Atomic Tunneling from a STM/AFM tip: Dissipative Quantum Effects from
Phonons | We study the effects of phonons on the tunneling of an atom between two
surfaces. In contrast to an atom tunneling in the bulk, the phonons couple very
strongly, and qualitatively change the tunneling behavior. This is the first
example of {\it ohmic} coupling from phonons for a two-state system. We propose
an experime... | 1994-06-08 | 2009-10-22 | [
"cond-mat"
] | Ard A. Louis and James P. Sethna |
cond-mat/9406039 | Hole-hole superconducting pairing in the t-J model induced by spin-wave
exchange | We study numerically the hole pairing induced by spin-wave exchange. The
contact hole-hole interaction is taken into account as well. It is assumed that
antiferromagnetic order is preserved at all scales relevant to pairing. The
strongest pairing is obtained for the d-wave symmetry of the gap. Dependence of
the value o... | 1994-06-08 | 2009-10-22 | [
"cond-mat"
] | V.I. Belinicher, A.L. Chernyshev, A.V. Dotsenko, and O.P. Sushkov |
cond-mat/9406044 | Pseudoparticle-operator description of an interacting Bose gas | We write the Hamiltonian of the Bose gas with two-body repulsive
$\delta$-function potential in a pseudoparticle operator basis which
diagonalizes the problem via the Bethe ansatz. In this operator basis the
original bosonic interactions are represented by zero-momentum
forward-scattering interactions between Landau-li... | 1994-06-08 | 2009-10-22 | [
"cond-mat"
] | A.H. Castro Neto, H.Q. Lin, H.-Y Chen and J.M.P. Carmelo |
cond-mat/9406034 | Reflectionless Tunneling Through a Double-Barrier NS Junction | The resistance is computed of an ${\rm NI}_{1}{\rm NI}_{2}{\rm S}$ junction,
where N = normal metal, S = superconductor, and ${\rm I}_{i}$ = insulator or
tunnel barrier (transmission probability per mode $\Gamma_{i}$). The ballistic
case is considered, as well as the case that the region between the two
barriers contai... | 1994-06-07 | 2007-05-23 | [
"cond-mat"
] | J.A. Melsen and C.W.J. Beenakker (Instituut-Lorentz, Leiden, The
Netherlands) |
cond-mat/9406036 | Conductance Distribution of a Quantum Dot with Non-Ideal Single-Channel
Leads | We have computed the probability distribution of the conductance of a
ballistic and chaotic cavity which is connected to two electron reservoirs by
leads with a single propagating mode, for arbitrary values of the transmission
probability Gamma of the mode, and for all three values of the symmetry index
beta. The theor... | 1994-06-07 | 2007-05-23 | [
"cond-mat"
] | P. W. Brouwer and C. W. J. Beenakker (Instituut-Lorentz, University of
Leiden, The Netherlands) |
cond-mat/9406038 | Competition between point and columnar disorder on the behavior of flux
lines in 1+1 dimension | The behavior of flux lines in the presence of both columnar and point
disorder in 1+1 dimension is investigated using Renormalization Group and
world-line Quantum Monte Carlo techniques. In particular, we calculate the
transverse wandering correlation function for a single boson and recover known
results for point and ... | 1994-06-07 | 2009-10-22 | [
"cond-mat"
] | T. P. Devereaux, R. T. Scalettar, and G. T. Zimanyi |
cond-mat/9406033 | 1D-Disordered Conductor with Loops Immersed in a Magnetic Field | We investigate the conductance of a 1-D disordered conducting loop with two
contacts, immersed in a magnetic flux. We show the appearance in this model of
the Al'tshuler-Aronov-Spivak behaviour. We also investigate the case of a chain
of loops distributed with finite density: in this case we show that the
interference ... | 1994-06-07 | 2009-10-22 | [
"cond-mat"
] | A.S. Cattaneo, A. Gamba, I.V. Kolokolov and M. Martellini |
cond-mat/9406031 | Explanation for the Resistivity Law in Quantum Hall System | We consider a 2D electron system in a strong magnetic field, where the local
Hall resistivity $\rho_{xy}(\vec r)$ is a function of position and
$\rho_{xx}(\vec r)$ is small compared to $\rho_{xy}$. Particularly if the
correlations fall off slowly with distance, or if fluctuations exist on several
length scales, one fin... | 1994-06-07 | 2009-10-22 | [
"cond-mat"
] | Steven H. Simon and Bertrand I. Halperin |
cond-mat/9406032 | Charged and Neutral Vortex Excitations in a Mean Field Theory for the
Fractional Quantum Hall Effect | Applying a bi-local mean field approximation to the fractional quantum Hall
state of $\nu=1/3$, we obtain charged and neutral vortex mean field solutions
numerically. We calculate the mean field energy and the fluctuation
corrections. The charged vortex has a fractional charge and a fractional
angular momentum. The neu... | 1994-06-07 | 2017-02-01 | [
"cond-mat",
"hep-th"
] | Nobuki Maeda |
cond-mat/9406037 | Josephson vortex Cherenkov radiation | We predict the Josephson vortex Cherenkov radiation of an electromagnetic
wave. We treat a long one--dimensional Josephson junction. We consider the wave
length of the radiated electromagnetic wave to be much less than the Josephson
penetration depth. We use for calculations the nonlocal Josephson
electrodynamics. We f... | 1994-06-07 | 2009-10-22 | [
"cond-mat"
] | R.G. Mints and I.B.Snapiro |
cond-mat/9406046 | Temperature Dependent Gap Anisotropy from Interlayer Tunneling | A recent experiment by Ma and collaborators shows that the gap anisotropy in
${\rm Bi}_2 {\rm Sr}_2 {\rm Ca}_1 {\rm Cu}_2 {\rm O}_{8+x}$ is strongly
temperature dependent. In particular, the superconducting gap along the $\Gamma
- M$ direction shows a weaker temperature dependence than the gap along the
$\Gamma - X$ di... | 1994-06-07 | 2007-05-23 | [
"cond-mat"
] | V. N. Muthukumar and M. Sardar |
cond-mat/9406027 | Electronic Raman scattering of Tl-2223 and the symmetry of the supercon-
ducting gap | Single crystalline Tl2Ba2Ca2Cu3O10 was studied using electronic Raman
scattering. The renormalization of the scattering continuum was investigated as
a function of the scattering geometry to determine the superconducting energy
gap 2Delta(k). The A1g- and B2g-symmetry component show a linear frequency
behaviour of the ... | 1994-06-06 | 2009-10-22 | [
"cond-mat"
] | A. Hoffmann, P. Lemmens, G. Guentherodt, V. Thomas, K. Winzer |
cond-mat/9406029 | On the External Field Effect in the Landau Theory of the
Weakly-First-Order Phase Transition | The effect of the external field on the weakly-discontinuous first-order
phase transition is analyzed in the frame of the Landau theory. The
transformation of the free energy expansion as a power series in the order
parameter is suggested that maps the first-order phase transition onto the
second-order one under the 'e... | 1994-06-06 | 2007-05-23 | [
"cond-mat"
] | M.A.Fradkin |
cond-mat/9406030 | Volume Effect in the Landau Theory of Martensitic Phase Transitions in
Cubic Crystals | An effect of the volume change upon proper ferroelastic (martensitic) phase
transitions in cubic crystals is considered. Corresponding terms in the
Ginzburg-Landau expansion of the Gibbs free energy are analyzed for the first-
as well as second-order phase transitions from cubic to tetragonal lattice
under the action o... | 1994-06-06 | 2008-02-03 | [
"cond-mat"
] | M.A.Fradkin |
cond-mat/9406026 | Van Hove Exciton-Cageons and High-T$_c$ Superconductivity, XA: Role of
Spin-Orbit Coupling in Generating a Diabolical Point | Spin-orbit coupling plays a large role in stabilizing the low-temperature
orthorhombic phase of La$_{2-x}$Sr$_x$CuO$_4$. It splits the degeneracy of the
van Hove singularities (thereby stabilizing the distorted phase) and completely
changes the shape of the Fermi surfaces, potentially introducing diabolical
points into... | 1994-06-06 | 2016-08-31 | [
"cond-mat"
] | R.S. Markiewicz (Physics Department and Barnett Institute,
Northeastern University) |
cond-mat/9406028 | Fluctuations and Intrinsic Pinning in Layered Superconductors | A flux liquid can condense into a smectic crystal in a pure layered
superconductors with the magnetic field oriented nearly parallel to the layers.
If the smectic order is commensurate with the layering, this crystal is {\sl
stable} to point disorder. By tilting and adjusting the magnitude of the
applied field, both in... | 1994-06-06 | 2009-10-22 | [
"cond-mat"
] | Leon Balents and David R. Nelson |
cond-mat/9406025 | Disorder Induced Phase Transition in a Random Quantum Antiferromagnet | A two-dimensional Heisenberg model with random antiferromagnetic
nearest-neighbor exchange is studied using quantum Monte Carlo techniques. As
the strength of the randomness is increased, the system undergoes a transition
from an antiferromagnetically ordered ground state to a gapless disordered
state. The finite-size ... | 1994-06-05 | 2009-10-22 | [
"cond-mat"
] | Anders W. Sandvik and Marco Vekic |
cond-mat/9406024 | On the low energy properies of fermions with singular interactions | We calculate the fermion Green function and particle-hole susceptibilities
for a degenerate two-dimensional fermion system with a singular gauge
interaction. We show that this is a strong coupling problem, with no small
parameter other than the fermion spin degeneracy, N. We consider two
interactions, one arising in th... | 1994-06-04 | 2009-10-22 | [
"cond-mat"
] | B. L. Altshuler, L. B. Ioffe, A. J. Millis |
cond-mat/9406022 | Resonant scattering on impurities in the Quantum Hall Effect | We develop a new approach to carrier transport between the edge states via
resonant scattering on impurities, which is applicable both for short and long
range impurities. A detailed analysis of resonant scattering on a single
impurity is performed. The results are used for study of the inter-edge
transport by multiple... | 1994-06-03 | 2009-10-22 | [
"cond-mat"
] | S. A. Gurvitz |
cond-mat/9406019 | Condensation of Hard-Core Pairs on a Lattice: A Model of the
Superconducting State in Cuprates | Using the Monte Carlo technique we study the dependence of transition
temperature, penetration depth and specific heat singularity on the pair
concentration in the Bose Hubbard model. We observe remarkable agreement with
the corresponding properties of cuprates. This points uniquely to Bose
condensation of hard-core pa... | 1994-06-03 | 2007-05-23 | [
"cond-mat"
] | Morten Holm Pedersen and Toni Schneider |
cond-mat/9406018 | Pair fluctuation effects above $T_{\rm c}$ | We explore the occurrence of pairing effects above $T_{\rm c}$ in the 2D
attractive Hubbard model. The presence of pairs above $T_{\rm c}$ goes beyond
the BCS approximation, in which pair formation and condensation occur at the
same temperature. Using the fully self-conserving $T$-matrix formalism, which
is valid above... | 1994-06-03 | 2019-08-17 | [
"cond-mat"
] | J.J. Rodr\'iguez-N\'u\~nez, S. Schafroth, R. Micnas, T. Schneider, H.
Beck and M.H. Pedersen |
cond-mat/9406020 | Landau Level Mixing and Solenoidal Terms in Lowest Landau Level Currents | We calculate the lowest Landau level (LLL) current by working in the full
Hilbert space of a two dimensional electron system in a magnetic field and
keeping all the non-vanishing terms in the high field limit. The answer a) is
not represented by a simple LLL operator and b) differs from the current
operator, recently d... | 1994-06-03 | 2015-06-25 | [
"cond-mat"
] | R. Rajaraman and S. L. Sondhi |
cond-mat/9406021 | Localization Effects in Bi2Sr2Ca(Cu,Co)2O8+y High Temperature
Superconductors | Doping Bi2Sr2Ca1Cu2O8+y with Co causes a superconductor-insulator transition.
We study correlations between changes in the electrical resistivity RHOab(T)
and the electronic bandstructure using identical single crystalline samples.
For undoped samples the resistivity is linear in temperature and has a
vanishing residua... | 1994-06-03 | 2009-10-22 | [
"cond-mat"
] | C. Quitmann, P. Almeras, Jian Ma, R.J. Kelley, H. Berger, G.
Margaritondo and M. Onellion (Dept. of Physics, Univ. of Wisconsin, Madison,
USA and EPFL Lausanne, Switzerland) |
cond-mat/9406009 | An Ade-O Classification of Minimal Incompressible Quantum Hall Fluids | We briefly review a theoretical picture of the quantum Hall effect in which
gauge symmetry of non-relativistic quantum mechanics, the representation theory
of U(1)-current algebra, and the study of odd, positive integral quadratic
forms on N-dimensional integral lattices play fundamental roles. We present a
classificat... | 1994-06-02 | 2007-05-23 | [
"cond-mat"
] | J\"urg Fr\"ohlich, Urban M. Studer, and Emmanuel Thiran |
cond-mat/9406013 | Glassy transition in the three-dimensional random field Ising model | The high temperature phase of the three dimensional random field Ising model
is studied using replica symmetry breaking framework. It is found that, above
the ferromagnetic transition temperature T_f, there appears a glassy phase at
intermediate temperatures T_f<T<T_b while the usual paramagnetic phase exists
for T>T_b... | 1994-06-02 | 2009-10-22 | [
"cond-mat"
] | M. Mezard and R. Monasson |
cond-mat/9406017 | Simulations of Solid-on-Solid Models of Spreading of Viscous Droplets | We have studied the dynamics of spreading of viscous non-volatile fluids on
surfaces by MC simulations of SOS models. We have concentrated on the complete
wetting regime, with surface diffusion barriers neglected for simplicity.
First, we have performed simulations for the standard SOS model. Formation of a
single prec... | 1994-06-02 | 2015-06-25 | [
"cond-mat"
] | O. Venalainen, T. Ala-Nissila, and K. Kaski |
cond-mat/9406016 | Inelastic Neutron Scattering from the Spin Ladder Compound (VO)2P2O7 | We present results from an inelastic neutron scattering experiment on the
candidate Heisenberg spin ladder vanadyl pyrophosphate, (VO)2P2O7. We find
evidence for a spin-wave excitation gap of $E_{gap} = 3.7\pm 0.2$ meV, at a
band minimum near $Q=0.8 A^{-1}$. This is consistent with expectations for
triplet spin waves i... | 1994-06-02 | 2009-10-22 | [
"cond-mat"
] | R.S.Eccleston, T.Barnes, J.Brody and J.W.Johnson |
cond-mat/9406010 | Quantum chaos in a deformable billiard: Applications to quantum dots | We perform a detailed numerical study of energy-level and wavefunction
statistics of a deformable quantum billiard focusing on properties relevant to
semiconductor quantum dots. We consider the family of Robnik billiards
generated by simple conformal maps of the unit disk; the shape of this family
of billiards may be v... | 1994-06-02 | 2009-10-22 | [
"cond-mat"
] | Henrik Bruus and A.D. Stone |
cond-mat/9406015 | Conservation laws and bosonization in integrable Luttinger liquids | We examine and explain the Luttinger-liquid character of models solvable by
the Bethe ansatz by introducing a suitable bosonic operator algebra. In the
case of the Hubbard chain, this involves two bosonic algebras which apply to
{\it all} values of $U$, electronic density, and magnetization. Only at zero
magnetization ... | 1994-06-02 | 2009-10-22 | [
"cond-mat"
] | J.M.P. Carmelo, A.H. Castro Neto and D.K. Campbell |
cond-mat/9406014 | Crossover from Two- to Three-Dimensional Behavior in Superfluids | We have studied the superfluid density $\rho_{s}$ on various size-lattices in
the geometry $L \times L \times H$ by numerical simulation of the $x-y$ model
using the Cluster Monte Carlo method. Applying the Kosterlitz-Thouless-Nelson
renormalization group equations for the superfluid density we have been able to
extrap... | 1994-06-02 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | N. Schultka and E. Manousakis |
cond-mat/9406008 | Magetic softening of Young's modulus of amorphous Fe90Zr10 | The Young's modulus and the internal friction of amorphous Fe$_{90}$Zr$_{10}$
alloy were measured near the Curie temperature using the vibrating reed
technique. The modulus shows softening around $T_c\approx 227K$ and the
internal friction undergoes drastic increase at $T_c$. It is found that both
the Young's modulus a... | 1994-06-02 | 2009-10-22 | [
"cond-mat"
] | S. H. Park and Y. H. Jeong |
cond-mat/9406011 | Anisotropic Scaling in Depinning of a Flux Line | We study the depinning of a flux line by analytical and numerical methods
applied to a phenomenological equation of motion. Transverse fluctuations do
not influence the critical behavior of the longitudinal component, justifying
``planar approximations". In an isotropic medium, longitudinal fluctuations
have a roughnes... | 1994-06-02 | 2009-10-22 | [
"cond-mat"
] | Deniz Ertas and Mehran Kardar |
cond-mat/9406012 | Temperature Induced Transitions between Insulator, Metal, and Quantum
Hall States | We report the observation of TEMPERATURE-INDUCED transitions between
insulator, metal, and quantum-Hall behaviors for transport coefficients in the
very dilute high mobility two-dimensional electron system in silicon. We
consider the $\nu=1$ quantum Hall effect at the border of it's existence, at
very low electron dens... | 1994-06-02 | 2007-05-23 | [
"cond-mat"
] | S.V.Kravchenko, Whitney Mason, J.E.Furneaux, J.M.Caulfield,
J.Singleton, and V.M.Pudalov |
cond-mat/9406023 | Exact low-energy landscape and relaxation phenomena in ISING spin
glasses | All ground states and low-lying excitations of a +/- I Ising spin glass model
on a cubic 4 x 4 x 4 lattice with periodical boundary conditions were
calculated using a method of combinatorical optimization. The structure of
states in the phase space is enlightened by a representation by means of
clusters in the configur... | 1994-06-01 | 2016-08-31 | [
"cond-mat"
] | T. Klotz and S. Kobe |
cond-mat/9406006 | Random bond Ising chain in a transverse magnetic field: A finite-size
scaling analysis | We investigate the zero-temperature quantum phase transition of the random
bond Ising chain in a transverse magnetic field. Its critical properties are
identical to those of the McCoy-Wu model, which is a classical Ising model in
two dimensions with layered disorder. The latter is studied via Monte Carlo
simulations an... | 1994-06-01 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | A. Crisanti and H. Rieger |
cond-mat/9406004 | Large physical spin approach for strongly correlated electrons | We present a novel approach for a systematic large--spin expansion of the
$t$-$J$ Hamiltonian which enables us to work without the constraint of no
double occupancy. In our scheme we can perform the large--spin limit ensuring
that the low energy spin excitations are in {\em exact} correspondence with the
physical excit... | 1994-06-01 | 2019-08-15 | [
"cond-mat"
] | A. Angelucci, S. Sorella and D. Poilblanc |
cond-mat/9406001 | Collective Excitations in Asymmetric Parabolic Quantum Wells | We study within the linear response theory the far-infrared optical
absorption spectrum and the collective excitations of an asymmetric, wide
parabolic Al$_x$Ga$_{1-x}$As quantum well, consisting of two half-parabolas of
different curvatures, in the presence of an in-plane magnetic field. We employ
a self-consistent-fi... | 1994-06-01 | 2009-10-22 | [
"cond-mat"
] | P. I. Tamborenea and S. Das Sarma |
cond-mat/9406005 | Critical Properties of Stochastic Cellular Automata} | We study the effect of mixing two rules on the dynamics of one-dimensional
cellular automata by large scale numerical simulations. We calculate the decay
of the magnetization for the Domany-Kinzel automaton (XOR/AND mixing) to its
equilibrium value in the three phases. This requires system sizes in excess of
1 million ... | 1994-06-01 | 2007-05-23 | [
"cond-mat"
] | Stam Nicolis |
cond-mat/9406003 | Hyperscaling for polymer rings | The statistics of a long closed self-avoiding walk (SAW) or polymer ring on a
$ d $-dimensional lattice obeys hyperscaling. The combination $ p_N
\left\langle R^2 \right\rangle^{ d/2}_N\mu^{ -N}, $ (where $ p_N $ is the
number of configurations of an oriented and rooted $ N $-step ring, $
\left\langle R^2 \right\rangle... | 1994-06-01 | 2013-11-18 | [
"cond-mat"
] | Bertrand Duplantier |
cond-mat/9406002 | Measuring the Relative Phase of the Energy Gap in a High-Temperature
Superconductor with EELS | A method of measuring the relative phase of the energy gap in a
high-temperature superconductor is suggested for electron energy loss
spectroscopy. Energy-resolved measurements of off-specular scattering should
show a feature similar to the specular feature associated with the gap. Unlike
the specular feature, which re... | 1994-06-01 | 2009-10-22 | [
"cond-mat"
] | Michael E. Flatte' |
cond-mat/9406007 | Scaling Exponents for Driven Two-Dimensional Growth | We present results of numerical simulations to estimate scaling exponents
associated with driven surface growth in two spatial dimensions. We have
simulated the restricted solid--on--solid growth model and used the time and
system size dependent interface width, and the equal time height correlation
function to determi... | 1994-06-01 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | T. Ala-Nissila and O. Venalainen |
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