Skip to content

Condensed Matter papers — page 193

cond-matBrowse archive

Resonant tunneling of electromagnetic waves through polariton gaps
We consider resonant tunneling of electromagnetic waves through an optical barrier formed by dielectric layers with the frequency dispersion of their dielectric permiability. The frequency region…
Lev I. Deych, D. Livdan, A. A. LisyanskyNov 25, 1997
Learn
N=1 Supersymmetric Spin-Charge Separation in effective gauge theories of planar magnetic superconductors
We present a N=1 Supersymmetric extension of a spin-charge separated effective SU(2)× US(1) `particle-hole' gauge theory of excitations about the nodes of the gap of a d-wave planar…
G. A. Diamandis, B. C. Georgalas, N. E. MavromatosNov 25, 1997
Learn
Optical Confinement of a Bose-Einstein Condensate
Bose-Einstein condensates of sodium atoms have been confined in an optical dipole trap using a single focused infrared laser beam. This eliminates the restrictions of magnetic traps for further…
D. M. Stamper-Kurn, M. R. Andrews, A. P. Chikkatur et al.Nov 25, 1997
Learn
Magnetotransport in Cuprates: a Test of the Spin Fluctuation Model
We report on a simple calculation of the magnetotransport in cuprate superconductors, based on the nearly antiferromagnetic Fermi liquid (spin fluctuation) model. We find that the model explains all…
Branko Stojkovic, David PinesNov 25, 1997
Learn
Many-body band structure and Fermi surface of the Kondo lattice
We present a theory for the single particle excitations and Fermi surface of the Kondo lattice. Thereby we construct an effective Hamiltonian describing the creation and propagation of single…
R. Eder, O. Rogojanu, G. A. SawatzkyNov 24, 1997
Learn
Analytic vortex solutions in an unusual Mexican hat potential
We introduce an unusual Mexican hat potential, a piecewise parabolic one, and we show that its vortex solutions can be found analytically, in contrast to the case of the standard Psi4 field theory.
Stavros TheodorakisNov 24, 1997
Learn
Phase Structures of Magnetic Impurity Models with Two-Body Hybridization
The most general model with a magnetic impurity coupled to hybridizing and screening channels of a conduction band is considered. The partition function of the system is asymptotically equivalent to…
Yue Yu, Wan-Peng TanNov 24, 1997
Learn
Dynamics of interacting clusters and dielectric response of relaxor ferroelectrics
The dielectric response in relaxor ferroelectrics is analyzed in the framework a model for the polarization dynamics in the presence of polar clusters. We associate the origin of polar clusters with…
B. E. Vugmeister, H. RabitzNov 22, 1997
Learn
Phase dynamics in a binary-collisions atom laser scheme
Various aspects of the phase dynamics of an atom laser scheme based on binary collisions are investigated. Analytical estimates of the influence of elastic atom-atom collisions on the laser linewidth…
O. Zobay, P. MeystreNov 22, 1997
Learn
Avalanche Mixing of Granular Solids
Mixing of two fractions of a granular material in a slowly rotating two-dimensional drum is considered. The rotation is around the axis of the upright drum. The drum is filled partially, and mixing…
S. N. DorogovtsevNov 21, 1997
Learn
Sound Propagation in Elongated Bose-Einstein Condensed Clouds
We consider propagation of sound pulses along the long axis of a Bose-Einstein condensed cloud in a very anisotropic trap. In the linear regime, we demonstrate that the square of the velocity of…
G. M. Kavoulakis, C. J. PethickNov 21, 1997
Learn
Fronts, Domain Growth and Dynamical Scaling in a d=1 non-Potential System
We present a study of dynamical scaling and front motion in a one dimensional system that describes Rayleigh-Benard convection in a rotating cell. We use a model of three competing modes proposed by…
R. Gallego, M. San Miguel, R. ToralNov 21, 1997
Learn
Low-energy excitations in 2-leg and 3-leg quantum spin ladders
Low-energy excitations in spin 1/2 antiferromagnetic Heisenberg spin ladders are studied by bosonization and gauge theoretical description. It is explicitly shown that zero modes in the bosonization…
Ikuo Ichinose, Yasuyuki KayamaNov 20, 1997
Learn
The Cooperon and the Random Matrix Model for Type-II Superconductors
We derive the connection between the Cooperon problem in weak localization theory and the random matrix description of type-II superconductors. As magnetic field and disorder increase, an extreme…
Safi R. BahcallNov 20, 1997
Learn
Superfluid 3He, Particle Physics and Cosmology
Superfluid 3He-A and high-temperature superconductors both have gapless fermionic quasiparticles with the "relativistic" spectrum close to the gap nodes. The interaction of these…
G. E. VolovikNov 20, 1997
Learn
Shuttle Mechanism for Charge Transfer in Coulomb Blockade Nanostructures
Room-temperature Coulomb blockade of charge transport through composite nanostructures containing organic inter-links has recently been observed. A pronounced charging effect in combination with the…
L. Y. Gorelik, A. Isacsson, M. V. Voinova et al.Nov 19, 1997
Learn
Nonequilibrium Phase Transition in the Kinetic Ising model: Absence of tricritical behaviour in presence of impurities
The nonequilibrium dynamic phase transition, in the two dimensional site diluted kinetic Ising model in presence of an oscillating magnetic field, has been studied by Monte Carlo simulation. The…
Muktish AcharyyaNov 19, 1997
Learn
Exact solution of quasi two and three dimensional quantum spin models
A class of quasi two and three dimensional quantum lattice spin models with nearest and next nearest neighbour interactions is proposed. The basic idea of construction is to introduce interactions in…
Anjan KunduNov 19, 1997
Learn
A Critique of ``A Critique of Two Metals''
This is a critique of cond-mat/9709195 . This paper is being submitted at this time for archiving purposes.
P. W. Anderson, G. BaskaranNov 19, 1997
Learn
The calculation of the impurity entropy for the exactly solvable two-channel Kondo model
In this paper the entropy of the two-channel Kondo impurity is calculated. We demonstrate that the exactly solvable system of finite size can be described in terms of free fermions. None of these…
A. V. RozhkovNov 18, 1997
Learn
Transport through a 1D Mott-Hubbard insulator of finite length
Transport through a 1D Mott-Hubbard insulator of a finite length L is studied beyond perturbative approach. At special value of the low energy constant of the interaction we have mapped the problem…
Vadim Ponomarenko, Naoto NagaosaNov 18, 1997
Learn
Collective Transport: From Superconductors to Earthquakes
In these lectures, a variety of non-equilibrium transport phenomena are introduced that all involve, in some way, elastic manifolds being driven through random media. A simple class of models is…
D. S. FisherNov 18, 1997
Learn
Is a Trapped One-Dimensional Bose Gas a Luttinger Liquid?
The low-energy fluctuations of a trapped, interacting quasi one-dimensional Bose gas are studied. Our considerations apply to experiments with highly anisotropic traps. We show that under suitable…
H. Monien, M. Linn, N. ElstnerNov 18, 1997
Learn
Designed nonlocal pseudopotentials for enhanced transferability
A new pseudopotential generation method is presented which significantly improves transferability. The method exploits the flexibility contained in the separable Kleinman-Bylander form of the…
Nicholas J. Ramer, Andrew M. RappeNov 17, 1997
Learn
Berry Phase and Dissipation of Topological Singularities
We outline a path integral derivation of both the transverse force, the Berry phase, and friction for a vortex from the microscopic fermionic superfluid theory. The derivation manifests transparently…
Ping Ao, Xiao-Mei ZhuNov 17, 1997
Learn
← PreviousPage 193Next →