نتایج جستجو برای: anisotropy evolution

تعداد نتایج: 374147  

2001
O. Petruk

Evolution of adiabatic remnants of an aspherical supernova explosion in uniform medium are considered. Thermal X-ray emission of such remnants are investigated. It is shown that integral thermal X-ray characteristics (X-ray luminosity and spectrum) of the objects do not allow us to reveal the assymetry in the explosion because these characteristics are close to their Sedov counterparts. Surface...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2001
S Sarkar P Mukhopadhyay M Khan J Ortner M Steinberg W Ebeling

In this paper, the evolution of the induced axial magnetization due to the propagation of an electromagnetic (em) wave along the static background magnetic field in a two-component plasma has been investigated using the Block equation. The evolution process induces a strong magnetic anisotropy in the plasma medium, depending nonlinearly on the incident wave amplitude. This induced magnetic anis...

2005
E. Athanassoula

From this vast subject, I will pick out and review three specific topics, namely the formation and evolution of bars, the formation of bulges, and the evolution during multiple major mergers. Bars form naturally in galactic discs. Their evolution is driven by the exchange of angular momentum within the galaxy. This is emitted mainly by near-resonant material in the inner disc (bar), and is abso...

Journal: :Nano letters 2015
Shaofeng Ge Chaokai Li Zhiming Zhang Chenglong Zhang Yudao Zhang Jun Qiu Qinsheng Wang Junku Liu Shuang Jia Ji Feng Dong Sun

Black phosphorus has recently emerged as a promising material for high-performance electronic and optoelectronic device for its high mobility, tunable mid-infrared bandgap, and anisotropic electronic properties. Dynamical evolution of photoexcited carriers and the induced transient change of electronic properties are critical for materials' high-field performance but remain to be explored for b...

Journal: :Physical review. B 2016
Kyoung-Whan Kim Kyung-Jin Lee Hyun-Woo Lee M D Stiles

We compute the magnetocrystalline anisotropy energy within two-dimensional Rashba models. For a ferromagnetic free-electron Rashba model, the magnetic anisotropy is exactly zero regardless of the strength of the Rashba coupling, unless only the lowest band is occupied. For this latter case, the model predicts in-plane anisotropy. For a more realistic Rashba model with finite band width, the mag...

2011
Wei-Gang Wang Stephen Hageman Mingen Li Sunxiang Huang Xiaoming Kou Xin Fan John Q. Xiao C. L. Chien

The tunneling magnetoresistance and perpendicular magnetic anisotropy in CoFeB(1.1-1.2 nm)/ MgO/CoFeB(1.2-1.7 nm) junctions were found to be very sensitively dependent on annealing time. During annealing at a given temperature, decay of magnetoresistance occurs much earlier compared to junctions with in-plane magnetic anisotropy. Through a rapid thermal annealing study, the decrease of magnetor...

2006
Shigetoshi YAZAKI

I’m going to talk how to derive crystalline curvature flow equation as a gradient flow of total interfacial energy with the singular anisotropy. The talk will be focused on the basic part of the following topics: • evolution of plane curves • anisotropy / the Wulff shape, etc. • crystalline curvature flow equation and its area-preserving version

2016
Alice Zocchi Mark Gieles Vincent Hénault-Brunet Anna Lisa Varri

Several self-consistent models have been proposed, aiming at describing the phase-space distribution of stars in globular clusters. This study explores the ability of the recently proposed LIMEPY models to reproduce the dynamical properties of direct N-body models of a cluster in a tidal field, during its entire evolution. These dynamical models include prescriptions for the truncation and the ...

Journal: :Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics 1999
A D Rutenberg C Yeung

Deterministic coarse-grained descriptions of driven diffusive systems (DDS) have been hampered by apparent inconsistencies with the kinetic Ising models of DDS. In the evolution towards the driven steady-state, "triangular" anisotropies in the two systems point in opposite directions with respect to the drive field. We show that this is nonuniversal behavior in the sense that the triangular ani...

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