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/9411015 | Surface Tension and Kinetic Coefficient for the Normal/Superconducting
Interface: Numerical Results vs. Asymptotic Analysis | The dynamics of the normal/superconducting interface in type-I
superconductors has recently been derived from the time-dependent
Ginzburg-Landau theory of superconductivity. In a suitable limit these
equations are mapped onto a ``free-boundary'' problem, in which the interfacial
dynamics are determined by the diffusion... | 1994-11-02 | 2009-10-22 | [
"cond-mat"
] | James C. Osborn and Alan T. Dorsey |
cond-mat/9411012 | A nonperturbative microscopic theory of Hamiltonian lattice gauge
systems | A review is given of our recent application of a systematic microscopic
formulation of quantum many-body theory, namely the coupled-cluster method
(CCM), to Hamiltonian $U(1)$ lattice gauge models in the pure gauge sector. It
is emphasized that our CCM results represent a natural extension or resummation
of the results... | 1994-11-02 | 2017-08-24 | [
"cond-mat"
] | R.F. Bishop, N.J. Davidson, and Y. Xian |
cond-mat/9411014 | Nonlocal Conductivity in Type-II Superconductors | Multiterminal transport measurements on YBCO crystals in the vortex liquid
regime have shown nonlocal conductivity on length scales up to 50 microns.
Motivated by these results we explore the wavevector ({\bf k}) dependence of
the dc conductivity tensor, $\sigma_{\mu\nu} ({\bf k})$, in the Meissner,
vortex lattice, and... | 1994-11-02 | 2012-08-17 | [
"cond-mat"
] | Chung-Yu Mou, Rachel Wortis, Alan T. Dorsey and David A. Huse |
cond-mat/9411010 | Exact Diagonalization Study of Strongly Correlated Electron Models: Hole
pockets and shadow bands in the doped t-J model | A detailed exact-diagonalization study is made for the doping dependence of
the single-particle spectral function $A({\bf k},\omega)$ and momentum
distribution function $n({\bf k})$ of the two-dimensional $t$$-$$J$ model as a
representative model for doped Mott insulators. The results for $A({\bf
k},\omega)$ show unamb... | 1994-11-02 | 2007-05-23 | [
"cond-mat"
] | Y. Ohta and R. Eder (Dept. of Appl. Phys., Nagoya Univ., Nagoya
464-01, Japan) |
cond-mat/9411011 | Thomas-Fermi approach to resonant tunneling in delta-doped diodes | We study resonant tunneling in B-$\delta$-doped diodes grown by Si-molecular
beam epitaxy. A Thomas-Fermi approach is used to obtain the conduction-band
modulation. Using a scalar Hamiltonian within the effective-mass approximation
we demonstrate that the occurrence of negative differential resistance (NDR)
only involv... | 1994-11-02 | 2009-10-22 | [
"cond-mat"
] | Enrique Diez, Francisco Dominguez-Adame, and Angel Sanchez |
cond-mat/9411008 | Fractional Exclusion Statistics and Anyons | Do anyons, dynamically realized by the field theoretic Chern-Simons
construction, obey fractional exclusion statistics? We find that they do if the
statistical interaction between anyons and anti-anyons is taken into account.
For this anyon model, we show perturbatively that the exchange statistical
parameter of anyons... | 1994-11-01 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | Wei Chen and Y. Jack Ng (Univ of North Carolina, Chapel Hill) |
cond-mat/9411002 | The high-temperature specific heat exponent of the 3-d Ising model | We have extended the high-temperature susceptibility series of the
three-dimensional spin-1\2 Ising model to v**26. Analysis of the new series
gives alpha = 0.101 +- 0.004. | 1994-11-01 | 2009-10-22 | [
"cond-mat"
] | A.J. Guttmann and I.G. Enting, latex |
cond-mat/9411003 | Cyclotron resonance lineshape in a Wigner crystal | The cyclotron resonance absorption spectrum in a Wigner crystal is
calculated. Effects of spin-splitting are modelled by substitutional disorder,
and calculated in the coherent potential approximation. Due to the increasing
strength of the dipole-dipole interaction, the results show a crossover from a
double-peak spect... | 1994-11-01 | 2009-10-22 | [
"cond-mat"
] | Peter Johansson |
cond-mat/9411004 | Statistical Theory of 2-Dimensional Quantum Vortex Gas: Non-Canonical
Effect and Generalized Zeta Function | The purpose of this paper is to present a quantum statistical theory of
2-dimensional vortex gas based on the generalized Hamiltonian dynamics recently
developed. The quantized spectrum is evaluated for a pair of vortex on the
basis of the semiclassical quantization rule. This is used to evaluate the
partition function... | 1994-11-01 | 2007-05-23 | [
"cond-mat"
] | Hideki ONO and Hiroshi KURATSUJI |
cond-mat/9411007 | Current-Loop Model for the Intermediate State of Type-I Superconductors | A theory is developed of the intricately fingered patterns of flux domains
observed in the intermediate state of thin type-I superconductors. The patterns
are shown to arise from the competition between the long-range Biot-Savart
interactions of the Meissner currents encircling each region and the
superconducting-norma... | 1994-11-01 | 2008-02-03 | [
"cond-mat",
"nlin.PS",
"patt-sol"
] | Raymond E. Goldstein, David P. Jackson, and Alan T. Dorsey |
cond-mat/9411001 | Self-organized Critical Model Of Biological Evolution | A punctuated equilibrium model of biological evolution with relative fitness
between different species being the fundamental driving force of evolution is
introduced. Mutation is modeled as a fitness updating cellular automaton
process where the change in fitness after mutation follows a Gaussian
distribution with mean... | 1994-11-01 | 2015-06-25 | [
"cond-mat",
"q-bio"
] | H.F. Chau (Dept of Phys, U of Illinois & School of Nat. Sci., Inst.
for Adv. Study), L. Mak (Coordinated Sci. Lab., U of Illinois) and P.K. Kwok
(Dept of Math.,U of Illinois) |
cond-mat/9411009 | Simultaneous Diagonal and Off Diagonal Order in the Bose--Hubbard
Hamiltonian | The Bose-Hubbard model exhibits a rich phase diagram consisting both of
insulating regimes where diagonal long range (solid) order dominates as well as
conducting regimes where off diagonal long range order (superfluidity) is
present. In this paper we describe the results of Quantum Monte Carlo
calculations of the phas... | 1994-11-01 | 2009-10-22 | [
"cond-mat"
] | R.T. Scalettar, G.G. Batrouni, A.P. Kampf, G.T. Zimanyi |
cond-mat/9411005 | Integrability and ideal conductance at finite temperatures | We analyse the finite temperature charge stiffness D(T>0), by a
generalization of Kohn's method, for the problem of a particle interacting with
a fermionic bath in one dimension. We present analytical evidence, using the
Bethe ansatz method, that D(T>0) is finite in the integrable case where the
mass of the particle eq... | 1994-11-01 | 2009-10-22 | [
"cond-mat"
] | H. Castella, X. Zotos, P. Prelovsek |
cond-mat/9411006 | Large Screening in Two Dimensional Nonabelian Vortex Systems | We study charge screening in a system of two dimensional nonabelian vortices,
at finite temperature. Such vortices are generated after an \( SO(3) \) global
symmetry group is spontaneously broken to a discrete subgroup \( \IQ_8 \),
where the latter is isomorphic to the nonabelian group of quaternions.
Poisson-Boltzmann... | 1994-11-01 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | Chinorat Kobdaj and Steven Thomas |
cond-mat/9410114 | Bloch oscillations, Zener tunneling and Wannier-Stark ladders in the
time-domain | We present a time-domain analysis of carrier dynamics in a semiconductor
superlattice with two minibands. Integration of the density-matrix equations of
motion reveals a number of new features: (i) for certain values of the applied
static electric field strong interband transitions occur; (ii) in static fields
the comp... | 1994-10-31 | 2009-10-22 | [
"cond-mat"
] | J. Rotvig, A. P. Jauho, and H. Smith |
cond-mat/9410113 | Semiclassical theory of transport in antidot lattices | We present a detailed study of quantum transport in large antidot arrays
whose classical dynamics is chaotic. We calculate the longitudinal and Hall
conduc- tivities semiclassically starting from the Kubo formula. The leading
contribu- tion reproduces the classical conductivity. In addition, we find
oscillatory quantum... | 1994-10-31 | 2009-10-22 | [
"cond-mat"
] | Gregor Hackenbroich and Felix von Oppen |
cond-mat/9410118 | Fluctuations of the Energy Levels Number at the Mobility Edge | We present a detailed analysis of the behavior of two--level correlation
function $R(s)$ in the disordered sample. We show that in the vicinity of the
Anderson transition as well as in $2d$, the variance of the number of levels in
an energy band of a width $E$ has a linear behavior as a function of $E$. This
is related... | 1994-10-31 | 2009-10-22 | [
"cond-mat"
] | Arkadii G.Aronov and Alexander D.Mirlin |
cond-mat/9410117 | Many-body States and Operator Algebra for Exclusion Statistics | We discuss many-body states and the algebra of creation and annihilation
operators for particles obeying exclusion statistics. | 1994-10-31 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | Dimitra Karabali and V.P. Nair |
cond-mat/9410116 | Metastable Dynamics of the Hard-Sphere System | The reformulation of the mode-coupling theory (MCT) of the liquid-glass
transition which incorporates the element of metastability is applied to the
hard-sphere system. It is shown that the glass transition in this system is not
a sharp one at the special value of the density or the packing fraction, which
is in contra... | 1994-10-31 | 2016-08-31 | [
"cond-mat"
] | Joonhyun Yeo |
cond-mat/9411022 | Directed Paths in Random Media | Contents:
A. Introduction
B. High Temperature Expansions for the Ising Model
C. Characteristic Functions and Cumulants
D. The One Dimensional Chain
E. Directed Paths and the Transfer Matrix
F. Moments of the Correlation Function
G. The Probability Distribution in Two Dimensions
H. Higher Dimensions
I.... | 1994-10-31 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | Mehran Kardar |
cond-mat/9410115 | Systematic Inclusion of High-Order Multi-Spin Correlations for the
Spin-$1\over2$ $XXZ$ Models | We apply the microscopic coupled-cluster method (CCM) to the spin-$1\over2$
$XXZ$ models on both the one-dimensional chain and the two-dimensional square
lattice. Based on a systematic approximation scheme of the CCM developed by us
previously, we carry out high-order {\it ab initio} calculations using
computer-algebra... | 1994-10-31 | 2017-08-24 | [
"cond-mat"
] | R. F. Bishop, R. G. Hale, and Y. Xian |
cond-mat/9410112 | Fluctuation Dissipation Ratio in Three-Dimensional Spin Glasses | We present an analysis of the data on aging in the three-dimensional Edwards
Anderson spin glass model with nearest neighbor interactions, which is well
suited for the comparison with a recently developed dynamical mean field
theory. We measure the parameter $x(q)$ describing the violation of the
relation among correla... | 1994-10-30 | 2009-10-22 | [
"cond-mat"
] | S. Franz and H. Rieger |
cond-mat/9410110 | The spectral gap for some spin chains with discrete symmetry breaking | We prove that for any finite set of generalized valence bond solid (GVBS)
states of a quantum spin chain there exists a translation invariant
finite-range Hamiltonian for which this set is the set of ground states. This
result implies that there are GVBS models with arbitrary broken discrete
symmetries that are describ... | 1994-10-29 | 2015-06-25 | [
"cond-mat"
] | Bruno Nachtergaele |
cond-mat/9410111 | Memory and Self Organization | The main result of this letter is that SOC naturally arises as a result of
memory effects. We show that memory effects provide the mechanism for self
organization. A general procedure to investigate this issue in models that
display self organized critical behaviour is proposed and applied to some
example. The simplest... | 1994-10-29 | 2007-05-23 | [
"cond-mat"
] | Matteo Marsili and Guido Caldarelli |
cond-mat/9410105 | Static Structure Factors of the XXZ-Model in the presence of a uniform
field | The static structure factors of the XXZ model in the presence of uniform
field are determined from an exact computation of the groundstates at given
total spin on rings with $N=4,6,\ldots,28$ sites. In contrast to the naive
expectation a weak uniform field strengthens the antiferromagnetic order in the
transverse struc... | 1994-10-28 | 2009-10-22 | [
"cond-mat"
] | M. Karbach, K.-H. M\"utter, M. Schmidt |
cond-mat/9410106 | Charge Exchange Processes between Excited Helium and Fully Stripped Ions | We made a classical trajectory Monte Carlo (CTMC) calculation of state
selective cross sections for processes between some light ions and excited
helium. The results, useful for analysis of spectroscopic data of fusion
devices, are in good agreement with theoretical predictions of scaling laws. | 1994-10-28 | 2007-05-23 | [
"cond-mat"
] | L. Salasnich and F. Sattin |
cond-mat/9410109 | Design Constraints for Nanometer Scale Quantum Computers | Nanometer scale electronics present a challenge for the computer architect.
These quantum devices have small gain and are difficult to interconnect. I have
analyzed current device capabilities and explored two general design
requirements for the design of computers: error correction and long range
connections. These tw... | 1994-10-28 | 2008-02-03 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | Ronnie Mainieri (Los Alamos National Laboratory) |
cond-mat/9410108 | Interplane relaxation and the bilayer coupling in
Y$_2$Ba$_4$Cu$_7$O$_{15}$ | The origin of the spin gap in the underdoped cuprate superconductors is still
mysterious. Experimental evidence from neutron scattering and NMR experiments
indicates that the spin gap might be present only in the bilayer compounds. A
naive calculation for a two plane Heisenberg model locates the order-disorder
transiti... | 1994-10-28 | 2009-10-22 | [
"cond-mat"
] | H. Monien and A. W. Sandvik (ETH Zuerich, Switzerland and UCSB Santa
Barbara, CA) |
cond-mat/9410107 | Some non perturbative calculations on spin glasses | Models of spin glasses are studied with a phase transition discontinuous in
the Parisi order parameter. It is assumed that the leading order corrections to
the thermodynamic limit of the high temperature free energy are due to the
existence of a metastable saddle point in the replica formalism. An ansatz is
made on the... | 1994-10-28 | 2009-10-22 | [
"cond-mat"
] | Matteo Campellone |
cond-mat/9410103 | Multiparticle Reactions with Spatial Anisotropy | We study the effect of anisotropic diffusion on the one-dimensional
annihilation reaction kA->inert with partial reaction probabilities when
hard-core particles meet in groups of k nearest neighbors. Based on scaling
arguments, mean field approaches and random walk considerations we argue that
the spatial anisotropy in... | 1994-10-27 | 2010-10-12 | [
"cond-mat"
] | Vladimir Privman, Enrique Burgos and Marcelo D. Grynberg |
cond-mat/9410104 | Dynamic Theory of Pearling Instability in Cylindrical Vesicles | We give a simple theory for recent experiments of Bar-Ziv and Moses% Phys.
Rev. Lett. {\bf73} (1994) 1392, in which tubular vesicles are excited using
laser tweezers to a ``peristaltic'' state. Considering the hydrodynamics of a
bilayer membrane under tension, we reproduce some of the qualitative behavior
seen and find... | 1994-10-27 | 2009-10-22 | [
"cond-mat"
] | Philip Nelson, Thomas Powers, and Udo Seifert |
cond-mat/9410102 | Sporadicity and synchronization in one-dimensional asymmetrically
coupled maps | A one-dimensional chain of sporadic maps with asymmetric nearest neighbour
couplings is numerically studied. It is shown that in the region of strong
asymmetry the system becomes spatially fully synchronized, even in the
thermodinamic limit, while the Lyapunov exponent is zero. For weak asymmetry
the synchronization is... | 1994-10-27 | 2009-10-22 | [
"cond-mat"
] | F Cecconi, A Crisanti, M Falcioni A Vulpiani |
cond-mat/9410101 | Fractional Statistics in One-Dimension: View From An Exactly Solvable
Model | One-dimensional fractional statistics is studied using the
Calogero-Sutherland model (CSM) which describes a system of non-relativistic
quantum particles interacting with inverse-square two-body potential on a ring.
The inverse-square exchange can be regarded as a pure statistical interaction
and this system can be map... | 1994-10-26 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | Z. N. C. Ha (School of Natural Sciences, IAS Princeton) |
cond-mat/9410092 | Nonlinear Resonant Tunnelling Through Double Barrier Structures | We study resonant tunnelling through double-barrier structures under an
applied bias voltage, in which nonlinearities due to self-interaction of
electrons in the barrier regions are included. As an approximation, we concern
ourselves with thin barriers simulated by $\delta$-function potentials. This
approximation allow... | 1994-10-26 | 2009-10-22 | [
"cond-mat"
] | Enrique Diez, Francisco Dominguez-Adame, and Angel S\'anchez |
cond-mat/9410097 | On the distribution of transmission eigenvalues in disordered wires | We solve the Dorokhov-Mello-Pereyra-Kumar equation which describes the
evolution of an ensamble of disordered wires of increasing length in the three
cases $\beta=1,2,4$. The solution is obtained by mapping the problem in that of
a suitable Calogero-Sutherland model. In the $\beta=2$ case our solution is in
complete ag... | 1994-10-26 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | M. Caselle |
cond-mat/9410094 | Exact Solutions for Wave Propagation in Birefringent Optical Fibers | We carry out a group-theoretical study of the pair of nonlinear
Schr\"{o}dinger equations describing the propagation of waves in nonlinear
birefringent optical fibers. We exploit the symmetry algebra associated with
these equations to provide examples of specific exact solutions. Among them, we
obtain the soliton profi... | 1994-10-26 | 2009-10-22 | [
"cond-mat"
] | E. Alfinito, M. Leo, R.A. Leo, G. Soliani and L. Solombrino |
cond-mat/9410098 | Green Function Approach to Interface States in Band Inverted Junctions | We calculate interface states in semiconductor heterostructures with band
inversion using a Green function approach and the so called {\em point
interaction potentials}. Effects of external fields can be included in a
straightforward fashion. | 1994-10-26 | 2015-06-25 | [
"cond-mat"
] | F. Dominguez-Adame |
cond-mat/9410099 | Test Experiment for Time-Reversal Symmetry Breaking Superconductivity | A new experiment is proposed to probe the time-reversal symmetry of a
superconductor. It is shown that a time-reversal symmetry breaking
superconductor can be identified by the observation of a fractional flux in
connection with a Josephson junction in a special geometry. | 1994-10-26 | 2009-10-22 | [
"cond-mat"
] | Manfred Sigrist and Yong Baek Kim |
cond-mat/9410100 | The Stability of the Peierls Instability for Ring-Shaped Molecules | We investigate the conventional tight-binding model of $L$ $\pi$-electrons on
a ring-shaped mol\-e\-cule of $L$ atoms with nearest neighbor hopping. The
hopping amplitudes, $t(w)$, depend on the atomic spacings, $w$, with an
associated distortion energy $V(w)$. A Hubbard type on-site interaction as well
as nearest-neig... | 1994-10-26 | 2009-10-22 | [
"cond-mat"
] | Elliott Lieb and Bruno Nachtergaele |
cond-mat/9410096 | Existence of an incommensurate ground state of interacting spinless
fermions in infinite dimensions | We focus on the ground state phase diagram of a system of spinless fermions
with repulsion on a hypercubic lattice in the limit of infinite dimensions. It
occurs spontaneous symmetry breaking into a charge density wave (CDW). Using an
ansatz for the order parameter which includes the homogeneous, the AB- and a
large cl... | 1994-10-26 | 2009-10-22 | [
"cond-mat"
] | G.S. Uhrig and R. Vlaming |
cond-mat/9410091 | A Generalized Circle Theorem on Zeros of Partition Function at
Asymmetric First Order Transitions | We present a generalized circle theorem which includes the Lee-Yang theorem
for symmetric transitions as a special case. It is found that zeros of the
partition function can be written in terms of discontinuities in the
derivatives of the free energy. For asymmetric transitions, the locus of the
zeros is tangent to the... | 1994-10-26 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | Koo-Chul Lee (Department of physics and the Center for Theoretical
Physics, Seoul National University, Seoul, Korea) |
cond-mat/9410095 | Resistance scaling at the Kosterlitz-Thouless transition | We study the linear resistance at the Kosterlitz-Thouless transition by Monte
Carlo simulation of vortex dynamics. Finite size scaling analysis of our data
show excellent agreement with scaling properties of the Kosterlitz-Thouless
transition. We also compare our results for the linear resistance with
experiments. By a... | 1994-10-26 | 2009-10-22 | [
"cond-mat"
] | Mats Wallin and Hans Weber |
cond-mat/9410090 | Direct Calculation of the Spin Stiffness in the $J_1$--$J_2$ Heisenberg
Antiferromagnet | We calculate the spin stiffness $\rho_s$ for the frustrated
spin-$\frac{1}{2}$ Heisenberg antiferromagnet on a square lattice by exact
diagonalizations on finite clusters of up to $36$ sites followed by
extrapolations to the thermodynamic limit. For the non-frustrated case, we find
that $\rho_s = (0.183\pm 0.003)J_1$, ... | 1994-10-25 | 2009-10-22 | [
"cond-mat"
] | T. Einarsson and H. J. Schulz |
cond-mat/9410089 | The Fully Frustrated Hypercubic Model is Glassy and Aging at Large $D$ | We discuss the behavior of the fully frustrated hypercubic cell in the
infinite dimensional mean-field limit. In the Ising case the system undergoes a
glass transition, well described by the random orthogonal model. Under the
glass temperature aging effects show clearly. In the $XY$ case there is no sign
of a phase tra... | 1994-10-25 | 2009-10-22 | [
"cond-mat",
"hep-lat",
"hep-th"
] | Enzo Marinari, Giorgio Parisi and Felix Ritort |
cond-mat/9410093 | On the Static and Dynamical Transition in the Mean-Field Potts Glass | We study the static as well as the glassy or dynamical transition in the
mean-field $p$-state Potts glass. By numerical solution of the saddle point
equations we investigate the static and the dynamical transition for all values
of $p$ in the non-perturbative regime $p>4$. The static and dynamical
Edwards-Anderson para... | 1994-10-25 | 2007-05-23 | [
"cond-mat"
] | Emilio de Santis, Giorgio Parisi and Felix Ritort |
cond-mat/9410087 | Thermal Conductivity Anisotropy in Superconducting $UPt_3$ | Recent thermal conductivity measurements on $UPt_3$ single crystals by
Lussier et al. indicate the existence of a strong b--c anisotropy in the
superconducting state. We calculate the thermal conductivity in various
unconventional candidate states appropriate for the $UPt_3$ ``B phase" and
compare with experiment, spec... | 1994-10-25 | 2009-10-22 | [
"cond-mat"
] | A. Fledderjohann and P.J. Hirschfeld |
cond-mat/9410088 | $D$-dimensional Arrays of Josephson Junctions, Spin Glasses and
$q$-deformed Harmonic Oscillators | We study the statistical mechanics of a $D$-dimensional array of Josephson
junctions in presence of a magnetic field. In the high temperature region the
thermodynamical properties can be computed in the limit $D \to \infty$, where
the problem is simplified; this limit is taken in the framework of the mean
field approxi... | 1994-10-25 | 2009-10-22 | [
"cond-mat",
"hep-lat",
"hep-th"
] | Giorgio Parisi |
cond-mat/9410083 | Larkin-Ovchinnikov-Fulde-Ferrell state in quasi-one-dimensional
superconductors | The properties of a quasi-one-dimensional (quasi-1D) superconductor with {\it
an open Fermi surface} are expected to be unusual in a magnetic field. On the
one hand, the quasi-1D structure of the Fermi surface strongly favors the
formation of a non-uniform state (Larkin-Ovchinnikov-Fulde-Ferrell (LOFF)
state) in the pr... | 1994-10-24 | 2009-10-22 | [
"cond-mat"
] | N. Dupuis |
cond-mat/9410085 | Anomalous Spin Dynamics in Doped Quantum Antiferromagnets | Finite-temperature spin dynamics in planar t-J model is studied using the
method based on the Lanczos diagonalization of small systems. Dynamical spin
structure factor at moderate dopings shows the coexistence of free-fermion-like
and spin-fluctuation timescales. At T<J, the low-frequency and static
susceptibility show... | 1994-10-24 | 2009-10-22 | [
"cond-mat"
] | J. Jaklic and P. Prelovsek |
cond-mat/9410082 | Exact Results for the Adsorption of a Flexible Self-Avoiding Polymer
Chain in Two Dimensions | We derive the exact critical couplings ($x^*, y_{\rm a}^*$), where $y_{\rm
a}^*/x^* = \sqrt{1+\sqrt2} = 1.533\ldots\,$, for the polymer adsorption
transition on the honeycomb lattice, along with the universal critical
exponents, from the Bethe Ansatz solution of the O($n$) loop model at the
special transition. Our resu... | 1994-10-24 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | M. T. Batchelor and C. M. Yung |
cond-mat/9410086 | Participation-Ratio Entropy and Critical Fluctuations in the
Thermodynamics of Pancake Vortices | We report on a study of the thermodynamics of the Ginzburg-Landau model for
two-dimensional type-II superconductors near the transition from the normal
state to the Abrikosov-lattice state. We couch our analysis in terms of the
participation-ratio entropy, $s(P)$, which expresses the volume in
order-parameter-space wit... | 1994-10-24 | 2009-10-22 | [
"cond-mat"
] | Jun Hu and A. H. MacDonald (Department of Physics, Indiana University) |
cond-mat/9410084 | Magnetization in 2+1 dimensional QED at Finite Temperature and Density | We consider Dirac fermions moving in a plane with a static homogeneous
magnetic field orthogonal to the plane. We calculate the effective action at
finite temperature and density. The magnetization is derived and it is shown
that the fermion gas exhibits de Haas-van Alphen oscillations at small
temperatures and weak ma... | 1994-10-24 | 2011-07-19 | [
"cond-mat"
] | Jens O. Andersen and Tor Haugset |
cond-mat/9410080 | Giant conductance oscillations in a normal mesoscopic ring induced by an
SNS Josephson current | A theoretical explanation of giant conductance oscillations observed in
normal mesoscopic rings with superconducting ``mirrors" is proposed. The effect
is due to resonant tuning of Andreev levels to the Fermi level, which enhances
the transparency of the system to the normal current. The mechanism is
demonstrated for a... | 1994-10-21 | 2007-05-23 | [
"cond-mat"
] | A. Kadigrobov, A. Zagoskin, R.I. Shekhter, and M. Jonson |
cond-mat/9410081 | Mesoscopic Conductance Oscillations in a Normal Sample Controlled by the
Superconductivity of an NS Boundary | An arrangement of mesoscopic experiments is considered when the conductance
of a mesoscopic normal metal sample is governed not only by the magnetic flux
threading the sample but by the supercurrent inside the superconductor coupled
to the normal metal sample as well. The conductance of the system is shown to
be associ... | 1994-10-21 | 2016-08-31 | [
"cond-mat"
] | A.Zagoskin, A.Kadigrobov, R.Shekhter, and M.Jonson |
cond-mat/9410076 | Effect of a Voltage Probe on the Phase-Coherent Conductance of a
Ballistic Chaotic Cavity | The effect of an invasive voltage probe on the phase-coherent conduction
through a ballistic chaotic cavity is investigated by random-matrix theory. The
entire distribution P(G) of the conductance G is computed for the case that the
cavity is coupled to source and drain by two point contacts with a quantized
conductanc... | 1994-10-20 | 2007-05-23 | [
"cond-mat"
] | P. W. Brouwer and C. W. J. Beenakker (Instituut-Lorentz, University of
Leiden, The Netherlands) |
cond-mat/9410077 | Liquid-vapour asymmetry in pure fluids: A Monte Carlo simulation study | Monte Carlo simulations within the grand canonical ensemble are used to
obtain the joint distribution of density and energy fluctuations $p_L(\rho,u)$
for two model fluids: a decorated lattice gas and a polymer system. In the near
critical region the form of $p_L(\rho,u)$ is analysed using a mixed field
finite-size-sca... | 1994-10-20 | 2009-10-22 | [
"cond-mat"
] | Nigel B. Wilding and Marcus Mueller |
cond-mat/9410079 | Pressure Tuning of the Charge Density Wave in the Halogen-Bridged
Transition-Metal (MX) Solid $Pt_2Br_6(NH_3)_4$ | We report the pressure dependence up to 95 kbar of Raman active stretching
modes in the quasi-one-dimensional MX chain solid $Pt_2Br_6(NH_3)_4$. The data
indicate that a predicted pressure-induced insulator-to-metal transition does
not occur, but are consistent with the solid undergoing either a
three-dimensional struc... | 1994-10-20 | 2009-10-22 | [
"cond-mat"
] | G.S. Kanner, J.Tinka Gammel, S.P. Love, S.R. Johnson, B. Scott, and
B.I. Swanson (Los Alamos National Laboratory, Los Alamos, NM) |
cond-mat/9410078 | Unwinding Scaling Violations in Phase Ordering | The one-dimensional $O(2)$ model is the simplest example of a system with
topological textures. The model exhibits anomalous ordering dynamics due to the
appearance of two characteristic length scales: the phase coherence length, $L
\sim t^{1/z}$, and the phase winding length, $L_{w} \sim L^{\chi}$. We derive
the scali... | 1994-10-20 | 2009-10-22 | [
"cond-mat"
] | A.D. Rutenberg and A.J. Bray |
cond-mat/9410071 | The Use of Hamiltonian Mechanics in Systems Driven by Colored Noise | The evaluation of the path-integral representation for stochastic processes
in the weak-noise limit shows that these systems are governed by a set of
equations which are those of a classical dynamics. We show that, even when the
noise is colored, these may be put into a Hamiltonian form which leads to
better insights a... | 1994-10-19 | 2009-10-22 | [
"cond-mat",
"adap-org",
"nlin.AO"
] | S.J.B. Einchcomb and A.J. McKane |
cond-mat/9410074 | Ab initio simulations of liquid NaSn alloys: Zintl anions and network
formation | Using the Car-Parrinello technique, ab initio molecular dynamics simulations
are performed for liquid NaSn alloys in five different compositions (20, 40,
50, 57 and 80 % sodium). The obtained structure factors agree well with the
data from neutron scattering experiments. The measured prepeak in the structure
factor is ... | 1994-10-19 | 2015-06-25 | [
"cond-mat"
] | M.Schoene, R.Kaschner, G.Seifert |
cond-mat/9410072 | Optimum Paths for Systems Subject to Internal Noise | We formulate the stochastic dynamics of a particle subject to internal
non-white (coloured) noise in terms of path-integrals. In the simplest case,
where the noise is exponentially correlated, the weak-noise limit is
characterised by optimum paths which are given by third order differential
equations. In contrast to sy... | 1994-10-19 | 2015-06-25 | [
"cond-mat",
"chem-ph"
] | S. J. B. Einchcomb and A. J. McKane |
cond-mat/9410070 | Finite-size effects of dimensional crossover in quasi-two-dimensional
three-state Potts model | A nearest neighbour spin pair of the quasi-two-dimensional three-state Potts
model interacts with the strength $J(>0)$ in the $xy$-plane and with $\lambda
J$ $(0\le \lambda \ll 1)$ in the $z$-axis. The phase transition is of
second-order when $\lambda = 0$ and is of first-order when $\lambda > 0$. The
dimensional cross... | 1994-10-19 | 2015-06-25 | [
"cond-mat"
] | Atsushi Yamagata |
cond-mat/9410075 | Random Frustration in two-dimensional spin-1/2 Heisenberg
antiferromagnet | The square lattice spin-1/2 antiferromagnet containing a dilute
concentration, $\delta$, of randomly placed ferromagnetic nearest-neighbor
bonds is studied at low-temperature via non-linear $\sigma$-model techniques
and by exact diagonalization. We generally find that long-range N\' eel order
is destroyed above a criti... | 1994-10-19 | 2009-10-22 | [
"cond-mat"
] | J.P. Rodriguez, J. Bonca, and J. Ferrer |
cond-mat/9410069 | $Pb_{0.4}Bi_{1.6}Sr_{2}Ca_{1}Cu_{2}O_{8+x}$ and Oxygen Stoichiometry:
Structure, Resistivity, Fermi Surface Topology and Normal State Properties | $Pb_{0.4}Bi_{1.6}Sr_2CaCu_2O_{8+x}$ ($Bi(Pb)-$2212) single crystal samples
were studied using transmission electron microscopy (TEM), $ab-$plane
($\rho_{ab}$) and $c-$axis ($\rho_c$) resistivity, and high resolution
angle-resolved ultraviolet photoemission spectroscopy (ARUPS). TEM reveals that
the modulation in the $b... | 1994-10-19 | 2016-08-14 | [
"cond-mat"
] | Jian Ma, P. Alm\'eras, R.J. Kelley, H.Berger, G. Margaritondo, X.Y.
Cai, Y. Feng, D. Larbalestier, and M. Onellion (Dept of Phys. and ASC, Univ.
of Wisconsin-Madison; Institut de Physique Appliqu\'ee, EPFL, Switzerland) |
cond-mat/9410073 | Spin Wave Frequency and Critical Dynamics of Ferromagnets Below T_C | Employing mode-coupling theory we show that the amplitude of the spin wave
frequency scaling function for the isotropic Heisenberg Hamiltonian is
universal. Theoretical and experimental values for Fe, Ni, Co, EuO, and EuS
agree quite well. Recent measurements of the longitudinal line width in Ni are
explained quantitat... | 1994-10-19 | 2009-10-22 | [
"cond-mat"
] | H. Schinz, and F. Schwabl |
cond-mat/9410060 | Connection between low energy effective Hamiltonians and energy level
statistics | We study the level statistics of a non-integrable one dimensional interacting
fermionic system characterized by the GOE distribution. We calculate
numerically on a finite size system the level spacing distribution $P(s)$ and
the Dyson-Mehta $\Delta_3$ correlation. We observe that its low energy spectrum
follows rather ... | 1994-10-18 | 2009-10-22 | [
"cond-mat"
] | M.Di Stasio and X. Zotos |
cond-mat/9410067 | Non-Ergodic Dynamics of the 2D Random-phase Sine-Gordon Model:
Applications to Vortex-Glass Arrays and Disordered-Substrate Surfaces | The dynamics of the random-phase sine-Gordon model, which describes 2D
vortex-glass arrays and crystalline surfaces on disordered substrates, is
investigated using the self-consistent Hartree approximation. The
fluctuation-dissipation theorem is violated below the critical temperature T_c
for large time t>t* where t* d... | 1994-10-18 | 2009-10-22 | [
"cond-mat"
] | D. Cule and Y. Shapir |
cond-mat/9410066 | The Eliashberg Function of Amorphous Metals | A connection is proposed between the anomalous thermal transport properties
of amorphous solids and the low-frequency behavior of the Eliashberg function.
By means of a model calculation we show that the size and frequency dependence
of the phonon mean-free-path that has been extracted from measurements of the
thermal ... | 1994-10-18 | 2009-10-22 | [
"cond-mat"
] | D.Belitz and M.N.Wybourne |
cond-mat/9410061 | Refined Simulations of the Reaction Front for Diffusion-Limited
Two-Species Annihilation in One Dimension | Extensive simulations are performed of the diffusion-limited reaction
A$+$B$\to 0$ in one dimension, with initially separated reagents. The reaction
rate profile, and the probability distributions of the separation and midpoint
of the nearest-neighbour pair of A and B particles, are all shown to exhibit
dynamic scaling... | 1994-10-18 | 2009-10-22 | [
"cond-mat"
] | Stephen Cornell |
cond-mat/9410065 | The Pairing Mechanism in HTSC investigated by Electronic Raman
Scattering | By means of electronic Raman scattering we investigated the symmetry of the
energy gap Delta(k), its temperature dependence and its variation with doping
of well characterized Bi2Sr2CaCu2O8+delta single crystals. The oxygen content
delta was varied between the under- and the overdoped regime by subsequently
annealing t... | 1994-10-18 | 2009-10-22 | [
"cond-mat"
] | A. Hoffmann, P. Lemmens, L. Winkeler, and G. Guentherodt |
cond-mat/9410068 | Thermal properties of gauge-fields common to anyon superconductors and
spin-liquids | The thermally driven confinement-deconfinement transition exhibited by
lattice quantum electrodynamics in two space dimensions is re-examined in the
context of the statistical gauge-fields common to anyon superconductors and to
spin-liquids. Particle-hole excitations in both systems are bound by a
confining string at t... | 1994-10-18 | 2009-10-22 | [
"cond-mat"
] | J.P. Rodriguez (LANL and Csula) |
cond-mat/9410063 | Random matrix theory for CPA: Generalization of Wegner's $n$--orbital
model | We introduce a generalization of Wegner's $n$-orbital model for the
description of randomly disordered systems by replacing his ensemble of
Gaussian random matrices by an ensemble of randomly rotated matrices. We
calculate the one- and two-particle Green's functions and the conductivity
exactly in the limit $n\to\infty... | 1994-10-18 | 2009-10-22 | [
"cond-mat",
"funct-an",
"math.FA"
] | Peter Neu and Roland Speicher |
cond-mat/9410064 | Rigorous mean field model for CPA: Anderson model with free random
variables | A model of a randomly disordered system with site-diagonal random energy
fluctuations is introduced. It is an extension of Wegner's $n$-orbital model to
arbitrary eigenvalue distribution in the electronic level space. The new
feature is that the random energy values are not assumed to be independent at
different sites ... | 1994-10-18 | 2009-10-22 | [
"cond-mat",
"funct-an",
"math.FA"
] | Peter Neu and Roland Speicher |
cond-mat/9410062 | Relaxation due to Incoherent Tunnelling in Dielectric Glasses | A new relaxation mechanism is shown to arise from overdamped two-level
systems above a critical temperature $T^*\approx 5$ K, thus yielding an
explanation for experimental observations in dielectric glasses in the
temperature range between $T^*$ and the relaxation peak at 50 K. Using the
distribution function of the tu... | 1994-10-18 | 2009-10-22 | [
"cond-mat"
] | Peter Neu and Alois W\"urger |
cond-mat/9410059 | Bosonization approach to the one-dimensional Kondo lattice model | The one-dimensional Kondo lattice model is investigated by using bosonization
techniques and conformal field theory. In the half-filled band, the charge and
spin gaps open for the anti-ferromagnetic Kondo coupling. Away from
half-filling, the paramagnetic metallic state is characterized by the fixed
point of Tomonaga-L... | 1994-10-18 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | S. Fujimoto and N. Kawakami |
cond-mat/9410058 | Spectral Functions of Local Operators In The Tomonaga-Luttinger Model | I give a simple general prescription for computing the spectral functions of
local operators in the Tomonaga-Luttinger model from the space-time correlation
functions. The method is significantly simpler than directly transforming the
space-time Greens function and allows a physical interpretation of the
singularities ... | 1994-10-17 | 2007-05-23 | [
"cond-mat"
] | S.P. Strong |
cond-mat/9410055 | Self-Consistent Microscopic Model of Fluctuation-Induced Transport | A Maxwell's demon type ``information engine" which extracts work from a bath
is constructed from a microscopic Hamiltonian for the whole system including a
subsystem, a thermal bath, and a nonequilibrium bath of phonons or photons
which represents an information source/sink. The kinetics of the engine is
calculated sel... | 1994-10-17 | 2009-10-22 | [
"cond-mat"
] | Mark M. Millonas |
cond-mat/9410050 | Universal Parametric Correlations of Eigenvalues of Random Matrix
Ensemble | Eigenvalue correlations of random matrix ensembles as a function of an
external perturbation are investigated vis the Dyson Brownian Motion Model in
the situation where the level density has a hard edge singularity. By solving a
linearized hydrodynamical equation, a universal dependence of the
density-density correlato... | 1994-10-17 | 2009-10-22 | [
"cond-mat"
] | Kasper Eriksen and Yang Chen |
cond-mat/9410056 | Observable and hidden singular features of large fluctuations in
nonequilibrium systems | We study local features, and provide a topological insight into the global
structure of the probability density distribution and of the pattern of the
optimal paths for large rare fluctuations away from a stable state. In contrast
to extremal paths in quantum mechanics, the optimal paths do {\it not}
encounter caustics... | 1994-10-17 | 2009-10-22 | [
"cond-mat"
] | Mark I. Dykman, Mark M. Millonas, Vadim N. Smelyanskiy |
cond-mat/9410051 | The Phase Diagram of Correlated Electrons in a Lattice of Berry
Molecules | A model for correlated electrons in a lattice with local additional spin--1
degrees of freedom inducing constrained hopping, is studied both in the low
density limit and at quarter filling. We show that in both 1D and 2D two
particles form a bound state even in presence of a repulsive U<U_c. A picture
of a dilute Bose ... | 1994-10-17 | 2009-10-22 | [
"cond-mat"
] | Giuseppe Santoro, Marco Airoldi, Nicola Manini, Erio Tosatti, Alberto
Parola |
cond-mat/9410052 | Simulations of Pressure Fluctuations and Acoustic Emission in Hydraulic
Fracturing | We consider a two dimensional lattice model to describe the opening of a
crack in hydraulic fracturing. In particular we consider that the material only
breaks under tension and the fluid has no pressure drop inside the crack. For
the case in which the material is completely homogeneous (no disorder) we
present results... | 1994-10-17 | 2009-10-22 | [
"cond-mat"
] | F. Tzschichholz and H.J.Herrmann |
cond-mat/9410053 | Numerical simulations on the 4d Heisenberg spin glass | We study the 4d Heisenberg spin glass model with Gaussian nearest-neighbor
interactions. We use finite size scaling to analyze the data. We find a
behavior consistent with a finite temperature spin glass transition. Our
estimates for the critical exponents agree with the results from
epsilon-expansion. | 1994-10-17 | 2009-10-22 | [
"cond-mat"
] | B. Coluzzi |
cond-mat/9410057 | Temporally Asymmetric Fluctuations are Sufficient for the Operation of a
Correlation Ratchet | It has been shown that the combination of a broken spatial symmetry in the
potential (or ratchet potential) and time correlations in the driving are
crucial, and enough to allow transformation of the fluctuations into work. The
required broken spatial symmetry implies a specific molecular arrangement of
the proteins in... | 1994-10-17 | 2009-10-22 | [
"cond-mat"
] | Dante R. Chialvo and Mark M. Millonas |
cond-mat/9410054 | Correlation decay and conformal anomaly in the two-dimensional
random-bond Ising ferromagnet | The two-dimensional random-bond Ising model is numerically studied on long
strips by transfer-matrix methods. It is shown that the rate of decay of
correlations at criticality, as derived from averages of the two largest
Lyapunov exponents plus conformal invariance arguments, differs from that
obtained through direct e... | 1994-10-17 | 2009-10-22 | [
"cond-mat"
] | S. L. A. de Queiroz |
cond-mat/9410046 | Does Quantum Chaos Explain Quantum Statistical Mechanics? | If a many-body quantum system approaches thermal equilibrium from a generic
initial state, then the expectation value $\langle\psi(t)|A_i|\psi(t)\rangle$,
where $|\psi(t)\rangle$ is the system's state vector and $A_i$ is an
experimentally accessible observable, should approach a constant value which is
independent of t... | 1994-10-14 | 2008-02-03 | [
"cond-mat",
"chao-dyn",
"hep-ph",
"hep-th",
"nlin.CD"
] | Mark Srednicki |
cond-mat/9410047 | Introduction to the Physics of the Quantum Hall Regime | These lecture notes attempt to explain the main ideas of the theory of the
quantum Hall effect. The emphasis is on the localization and interaction
physics in the extreme quantum limit which gives rise to the quantum Hall
effect. The interaction physics in the extreme quantum limit which is
responsible for the fraction... | 1994-10-14 | 2007-05-23 | [
"cond-mat"
] | A.H. MacDonald |
cond-mat/9410049 | The conformation of conducting polymer chains: Hubbard polymers | The conformational and electronic properties of conducting flexible random
and self-avoiding walk polymer chains are under investigation. A Hamiltonian
for conjugated flexible polymers is introduced and its physical consequences
are presented. One important result is that the electronic degrees of freedom
greatly affec... | 1994-10-14 | 2009-10-22 | [
"cond-mat"
] | M.Otto and T.A.Vilgis |
cond-mat/9410048 | Magnetic Oscillations and Quasiparticle Band Structure in the Mixed
State of Type-II Superconductors | We consider magnetic oscillations due to Landau quantization in the mixed
state of type-II superconductors. Our work is based on a previously developed
formalism which allows the mean-field gap equations of the Abrikosov state to
be conveniently solved in a Landau level representation. We find that the
quasiparticle ba... | 1994-10-14 | 2009-10-22 | [
"cond-mat"
] | M.R. Norman, A.H. MacDonald, and H. Akera |
cond-mat/9410045 | Phase--coherence Effects in Antidot Lattices: A Semiclassical Approach
to Bulk Conductivity | We derive semiclassical expressions for the Kubo conductivity tensor. Within
our approach the oscillatory parts of the diagonal and Hall conductivity are
given as sums over contributions from classical periodic orbits in close
relation to Gutzwiller's trace formula for the density of states. Taking into
account the eff... | 1994-10-13 | 2009-10-22 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | Klaus Richter |
cond-mat/9410042 | Macroscopic Quantum Tunneling and Dissipation of Domain Wall in
Ferromagnetic Metals | The depinning of a domain wall in ferromagentic metal via macroscopic quantum
tunneling is studied based on the Hubbard model. The dynamics of the
magnetization verctor is shown to be governed by an effective action of
Heisenberg model with a term non-local in time that describes the dissipation
due to the conduction e... | 1994-10-13 | 2015-06-25 | [
"cond-mat"
] | Gen Tatara (The Institute of Physical and Chemical Research
(RIKEN),Wako, Saitama 351-01, Japan) and Hidetoshi Fukuyama (Dept. of
Physics, Univ. of Tokyo, 7-3-1 Hongo, Tokyo 113, Japan) |
cond-mat/9410043 | On the Scaling Limit of the 1D Hubbard Model at Half Filling | The dispersion relations and S-matrix of the one-dimensional Hubbard model at
half filling are considered in a certain scaling limit. (In the process we
derive a useful small-coupling expansion of the exact lattice dispersion
relations.) The resulting scattering theory is consistently identified as that
of the SU(2) ch... | 1994-10-13 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | Ezer Melzer |
cond-mat/9410044 | On Thermometer Operation of Ultrasmall Tunnel Junctions | The temperature dependence of the I-V characteristics of many single-electron
tunneling devices enable thermometer operation of these systems. We investigate
two normal conducting kinds of them, {\sl (a)} a single junction in a
high-impedance environment, and {\sl (b)} a double junction. The
characteristics of both dev... | 1994-10-13 | 2007-05-23 | [
"cond-mat"
] | H.-O. M\"uller, A. H\"adicke and W. Krech |
cond-mat/9410041 | The Probability of an Eigenvalue Number Fluctuation in an Interval of a
Random Matrix Spectrum | We calculate the probability to find exactly $n$ eigenvalues in a spectral
interval of a large random $N \times N$ matrix when this interval contains $s
\ll N$ eigenvalues on average. The calculations exploit an analogy to the
problem of finding a two-dimensional charge distribution on the interface of a
semiconductor ... | 1994-10-12 | 2009-10-22 | [
"cond-mat"
] | M. M. Fogler and B. I. Shklovskii |
cond-mat/9410040 | Towards a theory of the integer quantum Hall transition: from the
nonlinear sigma model to superspin chains | A careful study of the supersymmetric version of Pruisken's nonlinear sigma
model for the integer quantum Hall effect is presented. The lattice regularized
model is cast in Hamiltonian form by taking the anisotropic limit and
interpreting the topological density as an alternating sum of Wess-Zumino
terms. It is argued ... | 1994-10-12 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | M. Zirnbauer |
cond-mat/9410039 | Conserving approximation for the three-band Hubbard model: flat
quasiparticle dispersion | It is shown that the low-energy single-particle excitation-spectrum of the
three-band Hubbard model at hole-dopings away from half-filling agrees
remarkably well with Quantum Monte Carlo data and spectroscopic experiments
within the framework of a conserving approximation that includes
self-consistently the interaction... | 1994-10-12 | 2008-02-03 | [
"cond-mat"
] | R. Putz, R. Preuss, A. Muramatsu and W. Hanke |
cond-mat/9410038 | Quantum Hall Effects at Finite Temperatures | We study the finite temperature (FT) effects on integer quantum Hall effect
(IQHE) and fractional quantum Hall effect (FQHE) as predicted by the composite
fermion model. We find that at $T\neq 0$, universality is lost, as is
quantization because of a new scale $T_0=\pi\rho /m^\ast p$. We find that this
loss is not inco... | 1994-10-12 | 2019-08-17 | [
"cond-mat"
] | Sudhansu S. Mandal, S. Ramaswamy, and V.Ravishankar |
cond-mat/9410037 | Spin Stiffness of Mesoscopic Quantum Antiferromagnets | We study the spin stiffness of a one-dimensional quantum antiferromagnet in
the whole range of system sizes $L$ and temperatures $T$. We show that for
integer and half-odd integer spin case the stiffness differs fundamentally in
its $L$ and $T$ dependence, and that in the latter case the stiffness exhibits
a striking d... | 1994-10-11 | 2009-10-22 | [
"cond-mat"
] | Daniel Loss and Dmitrii L. Maslov |
cond-mat/9410036 | Dynamic surface critical behavior of systems with conserved bulk order
parameter: Detailed RG analysis of the semi-infinite extensions of model B
with and without nonconservative surface terms | The dynamic surface critical behavior of macroscopic systems whose dynamic
bulk critical behavior is described by model $B$ is investigated. The
semi-infinite extensions of bulk model $B$ introduced in a previous treatment
[Phys. Rev. B 49, 2846 (1994)] and called models $B_A$ and $B_B$ are studied in
detail by means o... | 1994-10-11 | 2009-10-22 | [
"cond-mat"
] | F. Wichmann and H. W. Diehl |
cond-mat/9410028 | Monte Carlo Simulation of Ising Models with Dipole Interaction | Recently, a new memory effect was found in the metamagnetic domain structure
of the diluted Ising antiferromagnet $Fe_x Mg_{1-x} Cl_2$ by domain imaging
with Faraday contrast. Essential for this effect is the dipole interaction. We
simulate the low temperature behavior of diluted Ising-antiferromagnets by a
Monte Carlo... | 1994-10-10 | 2009-10-22 | [
"cond-mat"
] | U. Nowak and A. Hucht |
cond-mat/9410034 | Self-organized digital disorder of Davydov's beta kink | I discuss the digital disorder introduced by Rosu and Canessa [Phys. Rev. E
47, R3818 (1993)] in the Davydov model of energy diffusion along \alpha-helix
protein chains. The digitally disordered Davydov beta kinks display
self-organized features, i.e., power law correlations both in time and space,
that may be attribut... | 1994-10-10 | 2008-02-03 | [
"cond-mat",
"nlin.SI",
"solv-int"
] | H.C. Rosu |
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