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We study the magnetic properties of metallic GaMnAs. We calculate the effective RKKY interaction between Mn spins using several realistic models for the valence band structure of GaAs. We also study the effect of positional disorder of the…

材料科学 · 物理学 2007-05-23 Gregory A. Fiete , Gergely Zarand , Boldizsar Janko , Pawel Redlinski , C. Pascu Moca

The Hall effect, the anomalous Hall effect and the spin Hall effect are fundamental transport processes in solids arising from the Lorentz force and the spin-orbit coupling respectively. The quantum versions of the Hall effect and the spin…

介观与纳米尺度物理 · 物理学 2010-07-13 Rui Yu , Wei Zhang , H. J. Zhang , S. C. Zhang , Xi Dai , Zhong Fang

Recently, antiferromagnetic (AF) materials have attracted rapid attention, because they are considered as outstanding candidates to replace the widely used ferromagnets in the next generation of spintronics. We propose a magnetoresistance…

介观与纳米尺度物理 · 物理学 2025-09-05 Wei-Tao Lu , Qing-Feng Sun

We study the anomalous Hall effect in monolayers of transition-metal dichalcogenides 2H-$MX_2$ ($M$=Mo, W, and $X$=S, Se, Te) under a proximity effect of ferromagnetic substrate. If a proximity-induced exchange field is introduced, the…

介观与纳米尺度物理 · 物理学 2017-08-10 Tetsuro Habe , Mikito Koshino

We study the temperature dependence of spin Hall magnetoresistance (SMR) in antiferromagnetic insulator (AFI)/metal bilayer systems. We calculate the amplitude of the SMR signal by using a quantum Monte Carlo simulation and examine how the…

介观与纳米尺度物理 · 物理学 2023-03-08 Takuto Ishikawa , Mamoru Matsuo , Takeo Kato

Anomalous Hall effect (AHE) is important for understanding the topological properties of electronic states, and provides insight into the spin-polarized carriers of magnetic materials. AHE has been extensively studied in metallic, but not…

介观与纳米尺度物理 · 物理学 2014-06-24 R. M. Qiao , S. S. Yan , T. S. Xu , M. W. Zhao , Y. X. Chen , G. L. Liu , W. L. Yang , R. K. Zheng , L. M. Mei

In [B. Binz, A. Vishwanath and V. Aji, Phys. Rev. Lett. 96, 207202 (2006)], a magnetic structure that breaks time reversal symmetry in the absence of net magnetization was proposed as an explanation for the high pressure "partially ordered"…

强关联电子 · 物理学 2009-11-11 B. Binz , A. Vishwanath

We report on the experimental observation of an anomalous Hall effect (AHE) in highly oriented pyrolytic graphite samples. The overall data indicate that the AHE in graphite can be self-consistently understood within the frameworks of the…

强关联电子 · 物理学 2009-11-11 Y. Kopelevich , J. C. Medina Pantoja , R. R. da Silva , F. Mrowka , P. Esquinazi

By analyzing the spin-group symmetry of magnons, we establish two generalized Onsager's relations in the magnon thermal Hall effect, which reveals the rich and complicated structures of the magnon Berry curvature in the parameter space of…

介观与纳米尺度物理 · 物理学 2026-03-04 Jikun Zhou , Yang Gao , Qian Niu

Anomalous Hall effect (AHE) plays important role in the rapidly developing field of antiferromagnetic spintronics. It has been recently discussed that it can be a feature of not only uncompensated magnetic systems but also in altermagnetic…

Using multiple scattering theory, we show that the generally accepted expression of transverse resistivity in magnetic systems that host skyrmions, given by the linear superposition of the ordinary (OHE), the anomalous (AHE) and the…

介观与纳米尺度物理 · 物理学 2021-04-21 Juba Bouaziz , Hiroshi Ishida , Samir Lounis , Stefan Blügel

The anomalous Hall effect in a multiband tight-binding model is numerically studied taking into account both elastic scattering by disorder and inelastic scattering by the electron-phonon interaction. The Hall conductivity is obtained as a…

强关联电子 · 物理学 2012-07-19 Atsuo Shitade , Naoto Nagaosa

We study magnetotransport in conical helimagnet crystals. Spin dependent magnetoresistance exhibits dramatic properties for high and low electron concentrations at different temperatures. For spin up electrons we find negative…

介观与纳米尺度物理 · 物理学 2024-04-03 Raz Rivlis , Andrei Zadorozhnyi , Yuri Dahnovsky

The anomalous Hall effect in two-dimensional ferromagnets is discussed to be the physical realization of the parity anomaly in (2+1)D, and the band crossing points behave as the topological singularity in the Brillouin zone. This appears as…

强关联电子 · 物理学 2009-11-07 Masaru Onoda , Naoto Nagaosa

In bilayers consisting of a normal metal (N) with spin-orbit coupling and a ferromagnet (F), the combination of the spin-Hall effect, the spin-transfer torque, and the inverse spin-Hall effect gives a small correction to the in-plane…

介观与纳米尺度物理 · 物理学 2021-07-15 David A. Reiss , Tobias Kampfrath , Piet W. Brouwer

We present a theory of the Anomalous Hall Effect (AHE) in ferromagnetic (Ga,Mn)As in the regime when conduction is due to phonon-assisted hopping of holes between localized states in the impurity band. We show that the microscopic origin of…

介观与纳米尺度物理 · 物理学 2009-11-10 A. A. Burkov , Leon Balents

The conductance and tunnel magneto-resistance (TMR) of the double barrier magnetic tunnel junction with spin-valve sandwich (F/P/F) inserted between two insulating barrier, are theoretically investigated. It is shown, that resonant…

凝聚态物理 · 物理学 2009-11-10 N. Ryzhanova , G. Reiss , F. Kanjouri , A. Vedyayev

Taking Mn doped Germanium as an example, we evoke the consideration of a two-band-like conduction in diluted ferromagnetic semiconductor (FMS). The main argument for claiming Ge:Mn as a FMS is the occurrence of the anomalous Hall effect…

材料科学 · 物理学 2009-10-28 Shengqiang Zhou , Danilo Buerger , Manfred Helm , Heidemarie Schmidt

Unconventional anomalous Hall effect in frustrated pyrochlore oxides is originated from spin chirality of non-coplanar localized spins, which can also be induced by the competition between ferromagnetic (FM) double exchange interaction…

强关联电子 · 物理学 2013-03-19 G. P. Zhang , Jian Zhang , Qi-Li Zhang , Jiang-Tao Zhou , M. H. Shangguan

Antiferromagnets are promising candidates for next-generation spintronic devices owing to their negligible stray fields and ultrafast spin dynamics. The noncollinear antiferromagnet $\mathrm{Mn}_{3}\mathrm{Sn}$ exhibits a large anomalous…

材料科学 · 物理学 2026-03-17 Yiming Liu , Xin Liu , Jiayao Zhu , Fengxian Ma , Li Ma , Dewei Zhao , Guoke Li , Congmian Zhen , Denglu Hou