Skip to content

Condensed Matter papers — page 255

cond-matBrowse archive

Bosonization of Fermi Liquids
We consider systems of non-relativistic, interacting electrons at finite density and zero temperature in d = 2, 3, ... dimensions. Our main concern is to characterize those systems that, under the…
Juerg Froehlich, Roland GoetschmannJun 14, 1996
Learn
The Magnus force in superfluids and superconductors
The forces on the vortex, transverse to its velocity, are considered. In addition to the superfluid Magnus force from the condensate (superfluid component), there are transverse forces from thermal…
E. B. SoninJun 14, 1996
Learn
Macrodynamics of Disordered and Frustrated Systems
It is shown how the macroscopic non-equilibrium dynamics of a class of systems whose microscopic stochastic dynamics involves disordered and frustrated but range-free interactions can be well…
D. Sherrington, A. C. C. Coolen, S. N. LaughtonJun 14, 1996
Learn
A model for the compaction of granular media
We introduce a lattice model, in which frustration plays a crucial role, to describe relaxation properties of granular media. We show Monte Carlo results for compaction in the presence of vibrations…
Mario Nicodemi, Antonio Coniglio, Hans J. HerrmannJun 14, 1996
Learn
Two dimensional bulk bands and surfaces resonances originated from (100) surfaces of III-V semiconductor compounds
We have calculated the electronic band structure of the (100) surface of the III--V zinc blende semiconductor compounds, using the standard tight binding method and the surface Green's function…
Daniel Olguin, Rafael BaqueroJun 14, 1996
Learn
Calculation of Universal Amplitude Ratios in three-loop order
For the universality class of three-dimensional Ising systems the ratio of the high- and low-temperature amplitudes for the correlation length and for the susceptibility are universal quantities.…
Christoph Gutsfeld, Jens Kuester, Gernot MuensterJun 13, 1996
Learn
Nearly critical ground state of LaCuO2.5
Using a combination of analytical techniques and Quantum Monte Carlo simulations we investigate the coupled spin ladder system LaCuO2.5. At a critical ratio of the interladder to intraladder coupling…
Matthias Troyer, M. E. Zhitomirsky, Kazuo UedaJun 13, 1996
Learn
Self-Consistent Model of Polymerization-Induced Phase Separation
We propose an exactly solvable self-consistent kinetic model of polymerization-induced phase separation (PIPS) via spinodal decomposition. Using modified Cahn-Hilliard and Glotzer-Coniglio theories…
Valeriy V. Ginzburg, Noel A. ClarkJun 13, 1996
Learn
Effect of disorder on the magnetic and transport properties of La1-xSrxMnO3
We study a simplified model of the electronic structure of compounds of the type of La1-xSrxMnO3. The model represents each Mn4+ ion by a spin S=1/2, on which an electron can be added…
R. Allub, B. AlascioJun 13, 1996
Learn
Anomalous Dimension and Spatial Correlations in a Point-Island Model
We examine the island size distribution function and spatial correlation function of a model for island growth in the submonolayer regime in both 1 and 2 dimensions. In our model the islands do not…
Ji Li, A. G. Rojo, Leonard M. SanderJun 13, 1996
Learn
d-Wave Order Parameter in Bi2212 from a Phenomenological Model of High Tc Cuprates
A phenomenological lattice model of high Tc cuprates including order parameter phase fluctuations is considered within the BCS approximation, to interpret the experimental data from ARPES…
Biplab ChattopadhyayJun 13, 1996
Learn
Kosterlitz-Thouless Transition and Short Range Spatial Correlations in an Extended Hubbard Model
We study the competition between intersite and local correlations in a spinless two-band extended Hubbard model by taking an alternative limit of infinite dimensions. We find that the intersite…
Qimiao Si, J. Lleweilun SmithJun 13, 1996
Learn
New magnetic coherence effect in superconducting La2-xSrxCuO4
We have used inelastic neutron scattering to examine the magnetic fluctuations at intermediate frequencies in the simplest high temperature superconductor, La2-xSrxCu4. The suppression of…
T. E. Mason, A. Schroder, G. Aeppli et al.Jun 12, 1996
Learn
Electronic and Magnetic States in the Giant Magneto-resistive Compounds
The paramagnetic insulator to ferromagnetic metal transition in Lanthanum manganites and the associated magnetoresistive phenomena is treated by considering the localization due to random hopping…
C. M. VarmaJun 12, 1996
Learn
Anomalous density dependence of static friction in sand
We measured experimentally the static friction force Fs on the surface of a glass rod immersed in dry sand. We observed that Fs is extremely sensitive to the closeness of packing of grains. A…
Viktor K. Horváth, Imre M. Jánosi, Péter J. VellaJun 12, 1996
Learn
Theory of finite temperature crossovers near quantum critical points close to, or above, their upper-critical dimension
A systematic method for the computation of finite temperature (T) crossover functions near quantum critical points close to, or above, their upper-critical dimension is devised. We describe the…
Subir SachdevJun 12, 1996
Learn
A new perspective on the Holstein polaron problem
The single-polaron band structure of the Holstein model in one and two dimensions is studied using a new form of resummed strong-coupling perturbation theory. Well converged results are obtained for…
Walter StephanJun 12, 1996
Learn
Universal Formulae for Percolation Thresholds
A power law is postulated for both site and bond percolation thresholds. The formula writes pc=p0[(d-1)(q-1)]-ad\ b, where d is the space dimension and q the coordination number. All…
Serge Galam, Alain MaugerJun 12, 1996
Learn
Equation of State for Exclusion Statistics in a Harmonic Well
We consider the equations of state for systems of particles with exclusion statistics in a harmonic well. Paradygmatic examples are noninteracting particles obeying ideal fractional exclusion…
Serguei B. Isakov, Stéphane OuvryJun 12, 1996
Learn
Temperature and Pressure Effects on the Resistivity of the Manganese Oxides
The temperature and pressure effects on the resistivity of the manganese oxides are studied analytically via the Kondo lattice model with a strong Hund's coupling. We obtain analytically the…
Hae-Young Kee, Jongbae HongJun 12, 1996
Learn
Microscopic Derivation of Non-Markovian Thermalization of a Brownian Particle
In this paper, the first microscopic approach to the Brownian motion is developed in the case where the mass density of the suspending bath is of the same order of magnitude as that of the Brownian…
Lydéric Bocquet, Jarosław PiaseckiJun 12, 1996
Learn
Metastability and Glassy Behavior of a Driven Flux-Line Lattice
Strong metastability and history dependence are observed in DC and pulsed transport studies of flux-line lattices in 2H-NbSe2, leading to the identification of two distinct states of the lattice…
W. Henderson, E. Y. Andrei, M. J. Higgins et al.Jun 11, 1996
Learn
Stability Conditions and the Single Mode Approximation in FQHE
A thermodynamic stability criterion for the spontaneous breaking of the translation invariance of many particle systems is derived. It simply requires the positive character of the wavevector…
Alejandro Cabo, Aurora Perez MartinezJun 11, 1996
Learn
Quantized hydrodynamic model and the dynamic structure factor for a trapped Bose gas
We quantize the recent hydrodynamic analysis of Stringari for the low-energy collective modes of a trapped Bose gas at T=0. This is based on the time-dependent Gross-Pitaevskii equation, but omits…
Wen-Chin Wu, A. GriffinJun 11, 1996
Learn
On Magnetic Impurities in Gapless Fermi Systems
In ordinary metals, antiferromagnetic exchange between conduction electrons and a magnetic impurity leads to screening of the impurity spin below the Kondo temperature, TK. In systems such as…
L. S. BorkowskiJun 11, 1996
Learn
← PreviousPage 255Next →