Browsing by Author "Pokrovsky, Valery L."
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Angular dependence of metamagnetic transitions in DyAgSb2
Myers, KD; Canfield, PC; Kalatsky, VA; Pokrovsky, Valery L. (American Physical Society, 1999)Measurements 
Angular dependence of metamagnetic transitions in HoNi2B2C
Canfield, PC; Budko, SL; Cho, BK; Lacerda, A.; Farrell, D.; JohnstonHalperin, E.; Kalatsky, VA; Pokrovsky, Valery L. (American Physical Society, 1997)Detailed measurements of M(2 K, H, theta) of HoNi2B2C, where theta is the angle that the applied field H makes with the [110] axis while remaining perpendicular to the crystallographic c axis, reveal three metamagnetic ... 
AngularDependence of the Critical Current in Layered Superconductors
Pokrovsky, Valery L.; Lyuksyutov, Igor F.; NATTERMANN, T. (American Physical Society, 1992) 
Anisotropic transport properties of ferromagneticsuperconducting bilayers
Kayali, MA; Pokrovsky, Valery L. (American Physical Society, 2004)We study the transport properties of vortex matter in a superconducting thin film separated by a thin insulator layer from a ferromagnetic layer. We assume an alternating stripe structure for both FM and superconducting ... 
Correlations in noisy LandauZener transitions
Pokrovsky, Valery L.; Scheidl, S. (American Physical Society, 2004)We analyze the influence of colored classical Gaussian noise on LandauZener transitions during a twolevel crossing in a timedependent regular external field. Transition probabilities and coherence factors become random ... 
Cyanide clusters of ReII with 3d metal ions and their magnetic properties: incorporating anisotropic ions into metalcyanide clusters with high spin magnetic ground states
Schelter, Eric John (Texas A&M University, 20050829)Clusters of metal ions that possess large numbers of magnetically coupled unpaired electrons have attracted much interest in recent years due to their fascinating magnetic behavior. With an appreciable component of magnetic ... 
Density of states and order parameter in dirty anisotropic superconductors
Pokrovsky, SV; Pokrovsky, Valery L. (American Physical Society, 1996)We analyze in detail how the scattering by nonmagnetic impurities affects the shape and amplitude of the order parameter (OF) and the density of states in anisotropic superconductors in the framework of BCS theory. Special ... 
Dissipation and coherent effects in narrow superconducting channels
Kayali, MA; Kogan, VG; Pokrovsky, Valery L. (American Physical Society, 2005)We apply the timedependent GinzburgLandau (TDGL) equations to study small ac currents of frequency omega in superconducting channels narrow on the scale of London penetration depth. We show that TDGL equations have ... 
Fast noise in the LandauZener theory RID B56172009
Pokrovsky, Valery L.; Sinitsyn, NA. (American Physical Society, 2003)We study the influence of a fast noise on LandauZener transitions. We demonstrate that a fast colored noise much weaker than the conventional white noise can produce transitions itself or can change substantially the ... 
Fast quantum noise in the LandauZener transition
Pokrovsky, Valery L.; Sun, D. (American Physical Society, 2007)We show by direct calculation starting from a microscopic model that the twostate system with timedependent energy levels in the presence of fast quantum noise obeys the master equation. The solution of master equation ... 
Generalizations of the LandauZener theory in the physics of nanoscale systems
Sinitsyn, Nikolai (Texas A&M University, 20040930)Nanoscale systems have sizes intermediate between atomic and macroscopic ones. Therefore their treatment often requires a combination of methods from atomic and condensed matter physics. The conventional LandauZener theory, ... 
Interaction of mesoscopic magnetic textures with superconductors
Erdin, S.; Kayali, AF; Lyuksyutov, Igor F.; Pokrovsky, Valery L. (American Physical Society, 2002)Here we report a method to calculate the vortex and magnetization arrangement for a system of interacting superconductors and ferromagnets separated in space. The method is based on static LondonMaxwell equations and the ... 
LandauZener transitions in a linear chain
Pokrovsky, Valery L.; Sinitsyn, NA. (American Physical Society, 2002)We present an exact asymptotic solution for electron transition amplitudes in an infinite linear chain driven by an external timedependent electric field. This solution extends the LandauZener theory for the case of an ... 
LandauZener transitions in noisy environment and manybody systems
Sun, Deqiang (20100116)This dissertation discusses the LandauZener (LZ) theory and its application in noisy environments and in manybody systems. The first project considers the effect of fast quantum noise on LZ transitions. There are two ... 
Longwavelength anomalous diffusion mode in the twodimensional XY dipole magnet
Abanov, Artem; Kashuba, A.; Pokrovsky, Valery L. (American Physical Society, 1997)In a twodimensional XY ferromagnet the dipole force induces a strong interaction between spin waves in the longwavelength limit. The major effect of this interaction is the transformation of a propagating spin wave into ... 
Microscopic model for the magnetic subsystem in HoNi2B2C
Kalatsky, VA; Pokrovsky, Valery L. (American Physical Society, 1998)We demonstrate that the system of localized magnetic moments in HoNi2B2C can be described by the fourpositional clock model. This model, at a proper choice of the coupling constants, yields several metamagnetic phases in ... 
Phase Diagram for Magnon Condensate in Yttrium Iron Garnet Film
Li, Fuxiang; Saslow, Wayne M.; Pokrovsky, Valery L. (Scientific Reports, 2013) 
PhaseDiagram of Ultrathin FerromagneticFilms with Perpendicular Anisotropy
Abanov, Artem; KALATSKY, V.; Pokrovsky, Valery L.; SASLOW, WM. (American Physical Society, 1995) 
Production of bosonic molecules in the nonequilibrium dynamics of a degenerate Fermi gas across a Feshbach resonance
Dobrescu, Bogdan E. (20090602)In this thesis I present a nonequilibrium quantum field theory that describes the production of molecular dimers from a twocomponent quantumdegenerate atomic Fermi gas, via a linear downward sweep of a magnetic field ... 
Rydberg Atoms in Weak MagneticFields
Kazantsev, A. P.; Pokrovsky, Valery L. (American Physical Society, 1983)