Browsing by Author "Abanov, Artem"
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Alignment of microcrystals of Mn12acetate and direct observation of single molecules thereof
Seo, Dongmin (20090515)This dissertation focuses on three separate studies. First, magnetization of the Mn12 acetate was studied by low temperature hysteresis loops and DC magnetization data on magnetically aligned Mn12acetate microcrystals. ... 
Analytical and micromagnetic study of a Neel domain wall
Rivkin, K.; Romanov, K.; Abanov, Artem; Adamov, Y.; Saslow, W. M. (American Physical Society, 2008)For ferromagnets with exchange, dipolar interaction, and uniaxial anisotropy, by both analytic methods and micromagnetic simulations we study Neel domain walls in thin ferromagnetic strips of finite width. Comparison of ... 
Anomalous Hall effect in a twodimensional electron gas
Nunner, Tamara S.; Sinitsyn, N. A.; Borunda, Mario F.; Dugaev, V. K.; Kovalev, A. A.; Abanov, Artem; Timm, Carsten; Jungwirth, T.; Inoue, Junichiro; MacDonald, A. H.; Sinova, Jairo. (American Physical Society, 2007)The anomalous Hall effect in a magnetic twodimensional electron gas with Rashba spinorbit coupling is studied within the KuboStreda formalism in the presence of pointlike potential impurities. We find that all contributions ... 
Condensation energy in the spinfermion model for cuprates
Abanov, Artem; Chubukov, AV. (American Physical Society, 2000) 
Currentdriven Domain Wall Dynamics And Its Electric Signature In Ferromagnetic Nanowires
Liu, Yang (20121019)We study currentinduced domain wall dynamics in a thin ferromagnetic nanowire. We derive the effective equations of domain wall motion, which depend on the wire geometry and material parameters. We describe the procedure ... 
Development of Ag Enhanced Textured Powder Bi2212/Ag Superconducting Wire Technology
Kellams, Joshua Norman (20181120)The current development technique for Bi2212 multifilament superconducting wire is the oxide powder in tube process. For this process, phase pure Bi2212 fine powder is loaded into a silver tube then drawn, stacked, and ... 
Differential sum rule for the relaxation rate in dirty superconductors
Chubukov, AV; Abanov, Artem; Basov, DN. (American Physical Society, 2003) 
DzyaloshinkiiMoriya Interaction and Hall Effects in Bulk Chiral Magnets from First Principle Calculations
Gayles, Jacob Davis (20161216)In this dissertation I will discuss the effect of real, momentum, and mixed space Berry phases in B20 compounds: MnSi, Mn1xFexGe, and Fe1yCoyGe. Recently there has been a tremendous experimental effort in stabilizing ... 
Electronic interactions between gold films and mn12acetate
Means, Joel Lewis (20090515)Interactions between Mn12–acetate molecular magnets and thin gold films have been explored in light of the theory of weak localization. Lowtemperature measurements of the magnetoresistance of gold films of varying ... 
Gap anisotropy and universal pairing scale in a spinfluctuation model of cuprate superconductors
Abanov, Artem; Chubukov, A. V.; Norman, M. R. (American Physical Society, 2008)We consider the evolution of d(x)(2)y(2) pairing, mediated by nearly critical spin fluctuations, with the coupling strength. We show that the onset temperature for pairing, T(*), smoothly evolves between weak and strong ... 
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 ... 
On Transverse Effects in Transport in Semi and Superconductors
Tikhonov, Konstantin S (20151221)In this dissertation, the results obtained during my PhD work are presented. As an introduction, the brief review of the theory of superconducting ﬂuctuations and a short discussion of experimental situation in the ﬁeld ... 
PhaseDiagram of Ultrathin FerromagneticFilms with Perpendicular Anisotropy
Abanov, Artem; KALATSKY, V.; Pokrovsky, Valery L.; SASLOW, WM. (American Physical Society, 1995) 
Reduced effect of impurities on the universal pairing scale in the cuprates
Vorontsov, A. B.; Abanov, Artem; Vavilov, M. G.; Chubukov, A. V. (American Physical Society, 2010)We consider the effect of nonmagnetic impurities on the onset temperature T* for the dwave pairing in spinfluctuation scenario for the cuprates. We analyze intermediate coupling regime when the magnetic correlation length ... 
Skyrmion in a real magnetic film
Abanov, Artem; Pokrovsky, Valery L. (American Physical Society, 1998)Skyrmions are magnetic defects in ultrathin magnetic films, similar to the bubble domains in the thicker films. Even weak uniaxial anisotropy determines their radii unambiguously. We derive equations of slow dynamics for ... 
Some Spectral Problems in Mathematical Physics
Do, Ngoc Thanh (20160531)In this dissertation we deal with some spectral problems for periodic differential operators originating from mathematical physics. We begin by using quantum graphs to model a particular graphyne and related nanotubes. The ... 
Spin Dynamics in the Presence of Spinorbit Interactions: from the Weak to the Strong Spinorbit Coupling Regime
Liu, Xin (20121019)We study the spin dynamics in a highmobility two dimensional electron gas (2DEG) system with generic spinorbit interactions (SOIs). We derive a set of spin dynamic equations which capture the purely exponential to the ... 
Theory of the Anomalous Hall Effect in the Insulating Regime
Liu, Xiongjun (20121019)The Hall resistivity in ferromagnetic materials has an anomalous contribution proportional to the magnetization, which is defined as the anomalous Hall effect (AHE). Being a central topic in the study of ferromagnetic ... 
Towards a New Generation of Nonvolatile Memory Devices: Creation and Manipulation of Topological Magnetic Structures by Electric Current
Rohe Salomon Da Rosa Rodrigues, Davi (20180522)In this thesis we propose a novel method to study the dynamics of topological magnetic textures. Based on the stability of these objects, scaling and symmetry arguments, we show that, despite the complexity of the micromagnetic ...