Textured Edges in Quantum Hall SystemsWe have investigated the formation of spin textures at the edges of quantum Hall systems for several ferromagnetic filling factors. The textures are driven by the same physics that leads to…A. Karlhede, S. A. Kivelson, K. Lejnell et al.·May 15, 1996SaveLearn
Generalized Bloch equations for a strongly driven tunneling systemUsing the Robertson projection operator formalism, we derive generalized Bloch equations which describe the dynamics of a biased two-level tunneling system strongly driven by an external field and…Peter Neu, Jochen Rau·May 15, 1996SaveLearn
Dynamical Nonlinear Optic Coefficients from the Symmetrized Density Matrix Renormalization Group MethodWe extend the symmetrized density matrix renormalization group (SDMRG) method to compute the dynamic nonlinear optic coefficients for long chains. By computing correction vectors in the appropriate…Swapan K. Pati, S. Ramasesha, Z. Shuai et al.·May 15, 1996SaveLearn
Radiation linewidth of a long Josephson junction in the flux-flow regimeTheoretical model for the radiation linewidth in a multi-fluxon state of a long Josephson junction is presented. Starting from the perturbed sine-Gordon model with the temperature dependent noise…A. A. Golubov, B. A. Malomed, A. V. Ustinov·May 15, 1996SaveLearn
Structural, Magnetic and Electronic Properties of Fe/Au Monatomic MultilayersAn Fe/Au monatomic multilayer, consisting of alternating single Fe and Au layers, has been studied by means of the self-consistent full-potential linearized augmented plane wave method. We show by…Zhu-Pei Shi, John F. Cooke, Zhenyu Zhang et al.·May 15, 1996SaveLearn
Self-organized criticality in self-directing walksA new model of self-organized criticality is proposed. An algebra of operators is introduced which is similar to that used for the Abelian sandpile model. The structure of the configurational space…V. B. Priezzhev·May 15, 1996SaveLearn
Evolution of the electronic structure of cyclic polythiophene upon bipolaron dopingElectronic structures of undoped and doped cyclic polythiophene (PT) are studied using modified σ-bond compressibility model. Cyclic PT doped with odd number of bipolarons creates an aromatic…D. Giri, K. Kundu·May 15, 1996SaveLearn
Internal Excitations and Dissipative Damping of Quantum Hall SkyrmionsWe propose an intrinsic maximum speed for dissipationless E cross B drift of Skyrmion quasiparticles in quantum Hall ferromagnets. When this speed is exceeded, Skyrmions can radiate spin-waves by…H. A. Fertig, L. Brey, R. Cote et al.·May 15, 1996SaveLearn
Statistical Properties of the Reflectance and Transmittance of an Amplifying Random MediaStatistical properties of the transmittance (T) and reflectance (R) of an amplifying layer with one-dimensional disorder are investigated analytically. Whereas the transmittance at typical…V. Freilikher, M. Pustilnik, I. Yurkevich·May 15, 1996SaveLearn
Temperature Dependence of Transport Coefficients in Liquid and Amorphous MetalsWe apply the muffin-tin effective medium approximation to calculate the temperature dependence of the resistivity and of the thermopower of amorphous and liquid metals. The results show unambiguously…Ulrich Werner, Raymond Fresard·May 15, 1996SaveLearn
Nontrivial Exponent for Simple DiffusionThe diffusion equation ∂tϕ= ∇2ϕis considered, with initial condition ϕ( x ,0) a gaussian random variable with zero mean. Using a simple approximate theory we show that the probability…Satya N. Majumdar, Clement Sire, Alan J. Bray et al.·May 14, 1996SaveLearn
Quantum and Classical Orientational Ordering in Solid HydrogenWe present a unified view of orientational ordering in phases I, II, and III of solid hydrogen. Phases II and III are orientationally ordered, while the ordering objects in phase II are angular…I. I. Mazin, R. J. Hemley, A. F. Goncharov et al.·May 14, 1996SaveLearn
Is the phase transition in the Heisenberg model described by the (2+ε)-expansion of the nonlinear σ-model?Nonlinear σ-model is an ubiquitous model. In this paper, the O(N) model where the N-component spin is a unit vector, S2=1,is considered. The stability of this model with respect to…G. E. Castilla, S. Chakravarty·May 14, 1996SaveLearn
Monte Carlo Study of a Three-Dimensional Vortex Glass Model with ScreeningWe investigate the critical behavior of the gauge glass model for the vortex glass transition in three-dimensional superconductors, including screening of the interaction between vortices. A Monte…C. Wengel, A. P. Young·May 14, 1996SaveLearn
Scaling of the Structure Factor in Fractal Aggregation of Colloids: Computer SimulationsIn the volume fraction range (0.005,0.08), we have obtained the temporal evolution of the structure factor S(q), in extensive numerical simulations of both diffusion-limited and reaction-limited…Agustin E. Gonzalez, Guillermo Ramirez-Santiago·May 14, 1996SaveLearn
Hole Dispersion and Symmetry of the Superconducting Order Parameter for Underdoped CuO2 Bilayers and 3D AntiferromagnetsWe calculate the dispersion of a hole in CuO2 bilayers and 3D antiferromagnets, using the self-consistent Born approximation (SCBA) to the t-J model. Superconductivity and the symmetry of…Alexander Nazarenko, Elbio Dagotto·May 14, 1996SaveLearn
Alkali Bose Condensate MixturesWe show that binary mixtures of Bose-condensates of alkali atoms have a great variety of ground state and vortex structures which can be accessed experimentally by varying the particle numbers of…Tin-Lun Ho, V. B. Shenoy·May 13, 1996SaveLearn
A Neutral Polyampholyte in an ionic solutionThe behavior of a neutral polyampholyte (PA) chain with N monomers, in an ionic solution, is analyzed in the framework of the full Debye-H u ckel-Bjerrum-Flory (DHBjF) theory. A PA…Alexandre Diehl, Marcia C. Barbosa, Yan Levin·May 13, 1996SaveLearn
The evolution of Bernstein modes in quantum wires with increasing deviation from parabolic confinementWe investigate the evolution of the interaction of the magnetoplasmon resonance with the harmonics of the cyclotron resonance as the confinement of an electron gas in a quantum wire increasingly…Arne Brataas, Vidar Gudmundsson, A. G. Mal'shukov et al.·May 13, 1996SaveLearn
Size-effects in the Density of States in NS and SNS junctionsThe quasiparticle local density of states (LDOS) is studied in clean NS and SNS junctions with increasing transverse size, from quasi-one-dimensional to three-dimensional. It is shown that finite…M. Blaauboer, R. T. W. Koperdraad, A. Lodder et al.·May 13, 1996SaveLearn
Stability of the Mezard-Parisi solution for random manifoldsThe eigenvalues of the Hessian associated with random manifolds are constructed for the general case of R steps of replica symmetry breaking. For the Parisi limit R∞ (continuum replica…D. M. Carlucci, C. De Dominicis, T. Temesvari·May 13, 1996SaveLearn
Coupled Luttinger LiquidsMany one--dimensional quantum systems, in particular interacting electron and spin systems, can be described a Luttinger liquids. Here, some basic ideas of this picture of one--dimensional systems…H. J. Schulz·May 13, 1996SaveLearn
Electronic Raman scattering and photoluminescence from La0.7Sr0.3MnO3 exhibiting giant magnetoresistanceRaman and Photoluminescence (PL) experiments on correlated metallic La0.7Sr0.3MnO3 have been carried out using different excitation wavelengths as a function of temperature from 15 K…Rajeev Gupta, A. K. Sood, R. Mahesh et al.·May 13, 1996SaveLearn
Spin glass behavior of frustrated 2-D Penrose lattice in the classical planar modelVia extensive Monte Carlo studies we show that the frustrated XY Hamiltonian on a 2-D Penrose lattice admits of a spin glass phase at low temperature. Studies of the Edwards-Anderson order parameter,…R. W. Reid, S. K. Bose, B. Mitrovic·May 12, 1996SaveLearn
Orbital Magnetism of 2D Chaotic LatticesWe study the orbital magnetism of 2D lattices with chaotic motion of electrons withing a primitive cell. Using the temperature diagrammatic technique we evaluate the averaged value and rms…A. I. Nesvizhskii, A. Yu. Zyuzin·May 12, 1996SaveLearn