Lateral electron localization by the induced surface chargeWe investigate the problem of the electron interacting with the charge induced on the metal or dielectric surface. We show that the interaction between the electron and the induced surface charge…S. Bednarek, J. Adamowski, B. Szafran·Aug 25, 2003SaveLearn
Legendre Integrators, Post-Processing and QuasiequilibriumA toolbox for the development and reduction of the dynamical models of nonequilibrium systems is presented. The main components of this toolbox are: Legendre integrators, dynamical postprocessing,…A. N. Gorban, P. A. Gorban, I. V. Karlin·Aug 25, 2003SaveLearn
Universality in the physics of cold atoms with large scattering lengthEffective field theories exploit a separation of scales in physical systems in order to perform systematically improvable, model-independent calculations. They are ideally suited to describe…H. -W. Hammer·Aug 25, 2003SaveLearn
Magnetic field dependence of the penetration depth of d-wave superconductors with strong isolated impuritiesA d-wave superconductor with isolated strong non-magnetic impurities should exhibit an upturn in the penetration depth at low temperatures. Here we calculate how an external magnetic field supresses…Shan-Wen Tsai, P. J. Hirschfeld·Aug 24, 2003SaveLearn
Impact of the Casimir-Polder Potential and Johnson Noise on Bose-Einstein Condensate Stability near SurfacesWe investigate the stability of magnetically trapped atomic Bose-Einstein condensates and thermal clouds near the transition temperature at small distances 0.5 microns < d < 10 microns from a…Yu-ju Lin, Igor Teper, Cheng Chin et al.·Aug 22, 2003SaveLearn
On the energy saved by interlayer interactions in the superconducting state of cupratesA Ginzburg-Landau-like functional is proposed reproducing the main low-energy features of various possible high-Tc superconducting mechanisms involving energy savings due to interlayer interactions.…Manuel V. Ramallo·Aug 21, 2003SaveLearn
Theory of Crystallization under Equilibrium Polymerization in a Solution and the Investigation of its Melting PropertiesWe generalize a recently investigated lattice model of semiflexible polymers formed under equilibrium polymerization in a solution and conduct a comprehensive investigation of its melting properties.…Sagar S. Rane, P. D. Gujrati·Aug 21, 2003SaveLearn
Cold atoms probe the magnetic field near a wireA microscopic Ioffe-Pritchard trap is formed using a straight, current-carrying wire, together with suitable auxiliary magnetic fields. By measuring the distribution of cold rubidium atoms held in…M. P. A. Jones, C. J. Vale, D. Sahagun et al.·Aug 21, 2003SaveLearn
Application of Bryan's algorithm to the mobility spectrum analysis of semiconductor devicesA powerful method for mobility spectrum analysis is presented, based on Bryan's maximum entropy algorithm. The Bayesian analysis central to Bryan's algorithm ensures that we avoid overfitting…D. Chrastina, J. P. Hague, D. R. Leadley·Aug 21, 2003SaveLearn
Circular Photogalvanic Effect at Inter-Band Excitation in Semiconductor Quantum WellsWe observed a circular photogalvanic effect (CPGE) in GaAs quantum wells at inter-band excitation. The spectral dependence of the CPGE is measured together with that of the polarization degree of the…V. V. Bel'kov, S. D. Ganichev, Petra Schneider et al.·Aug 21, 2003SaveLearn
Zeros of the Partition Function and Pseudospinodals in Long-Range Ising ModelsThe relation between the zeros of the partition function and spinodal critical points in Ising models with long-range interactions is investigated. We find the spinodal is associated with the zeros…Natali Gulbahce, Harvey Gould, W. Klein·Aug 20, 2003SaveLearn
Holographic Methods as Local Probes of the Atomic Order in SolidsIn the last fifteen years several techniques based on the holographic principle have been developed for the study of the 3D local order in solids. These methods use various particles: electrons, hard…G. Faigel, M Tegze, G. Bortel et al.·Aug 19, 2003SaveLearn
Magnetic field effect on tunnel ionization of deep impurities by terahertz radiationA suppression of tunnelling ionization of deep impurities in terahertz frequency electric fields by a magnetic field is observed. It is shown that the ionization probability at external magnetic…S. D. Ganichev, S. N. Danilov, M. Sollinger et al.·Aug 19, 2003SaveLearn
Photoluminescence from single walled carbon nanotubes: a comparison between suspended and micelle-encapsulated nanotubesSingle walled carbon nanotubes (SWNTs) are luminescent. Up to now, two preparation methods, both of which isolate individual SWNTs, have enabled the detection of nanotube bandgap photoluminescence…J. Lefebvre, J. M. Fraser, Y. Homma et al.·Aug 18, 2003SaveLearn
Numerical analysis of the one-mode solutions in the Fermi-Pasta-Ulam systemThe stability of the one-mode nonlinear solutions of the Fermi-Pasta-Ulam - β system is numerically investigated. No external perturbation is considered for the one-mode exact analytical solutions,…Alessandro Cafarella, Mario Leo, Rosario Antonio Leo·Aug 18, 2003SaveLearn
Conversion of an Atomic Fermi Gas to a Long-Lived Molecular Bose GasWe have converted an ultracold Fermi gas of 6Li atoms into an ultracold gas of 6Li2 molecules by adiabatic passage through a Feshbach resonance. Approximately 1.5 × 105 molecules in…Kevin E. Strecker, Guthrie B. Partridge, Randall G. Hulet·Aug 15, 2003SaveLearn
Magneto-optical response of CdSe nanostructuresWe present theoretical calculations of the Landé g-factors of semiconductor nanostructures using a time-dependent empirical tight-binding method. The eigenenergies and eigenfunctions of the band edge…Po-Chung Chen, K. Birgitta Whaley·Aug 15, 2003SaveLearn
Effect of interface bonding on spin-dependent tunneling from the oxidized Co surfaceWe demonstrate that the factorization of the tunneling transmission into the product of two surface transmission functions and a vacuum decay factor allows one to generalize Julliere's formula…K. D. Belashchenko, E. Y. Tsymbal, M. van Schilfgaarde et al.·Aug 14, 2003SaveLearn
Critical Susceptibility Exponent Measured from Fe/W(110) BilayersThe critical phase transition in ferromagnetic ultrathin Fe/W(110) films has been studied using the magnetic ac susceptibility. A statistically objective, unconstrained fitting of the susceptibility…M. J. Dunlavy, D. Venus·Aug 14, 2003SaveLearn
Thermoelectric Modeling of the Non-Ohmic Differential Conductance in a Tunnel Junction containing a PinholeTo test the quality of a tunnel junction, one sometimes fits the bias-dependent differential conductance to a theoretical model, such as Simmons's formula. Recent experimental work by Åkerman and…Zhongsheng Zhang, David A. Rabson·Aug 12, 2003SaveLearn
A Simple Model for Magnetization Ratios in Doped NanocrystalsRecent experiments on Mn-doped ZnS nanocrystals have shown unusual magnetization properties. We describe a nearest-neighbor Heisenberg exchange model for calculating the magnetization ratios of these…Joshua Schrier, K. Birgitta Whaley·Aug 11, 2003SaveLearn
Relationship between dynamical heterogeneities and stretched exponential relaxationWe identify the dynamical heterogeneities as an essential prerequisite for stretched exponential relaxation in dynamically frustrated systems. This heterogeneity takes the form of ordered domains of…S. I. Simdyankin, Normand Mousseau·Aug 11, 2003SaveLearn
Kelvin Wave Cascade and Decay of Superfluid TurbulenceKelvin waves (kelvons)--the distortion waves on vortex lines--play a key part in the relaxation of superfluid turbulence at low temperatures. We present a weak-turbulence theory of kelvons. We show…Evgeny Kozik, Boris Svistunov·Aug 10, 2003SaveLearn
Suppression of Ecological Competition by Apex PredatorIn the framework of Lotka-Volterra dynamics with evolutionary parameter variation, it is shown that a system of two competing species which is evolutionarily unstable, if left to themselves, is…Taksu Cheon, Shigemi Ohta·Aug 8, 2003SaveLearn
Mechanism of Luminescence Ring Pattern Formation in Quantum Well Structures: Optically-Induced In-Plane Charge SeparationAbout a year ago, two independent experiments [1,2], imaging indirect exciton luminescence from doped double quantum wells under applied bias and optical excitation, reported a very intriguing…R. Rapaport, Gang Chen, D. Snoke et al.·Aug 7, 2003SaveLearn