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The intrinsic anomalous Hall effect is one of the most exciting manifestations of the geometric properties of the electronic wave-function. Here, we predict that the electronic wave-function's geometric nature also gives rise to a purely…

介观与纳米尺度物理 · 物理学 2021-04-07 Kamal Das , Amit Agarwal

We develop a theory for the electrical and thermal transverse linear response functions such as the Hall, Nernst and thermal Hall effects in magnetic materials that harbor topological spin textures like skyrmions. In addition to the…

介观与纳米尺度物理 · 物理学 2025-08-05 Zachariah Addison , Lauren Keyes , Mohit Randeria

We propose that topological spin currents flowing in topologically non-trivial magnetic textures, such as magnetic skyrmions and vortices, produce an intrinsic non-adiabatic torque of the form ${\bf T}_t\sim [(\partial_x{\bf…

介观与纳米尺度物理 · 物理学 2017-03-08 Collins Ashu Akosa , Papa Birame Ndiaye , Aurélien Manchon

A new method for analysing magnetization dynamics in spin textures under the influence of fast electron injection from topological ferromagnetic sources such as Dirac half metals has been proposed. These electrons, traveling at a velocity…

介观与纳米尺度物理 · 物理学 2023-08-16 Satadeep Bhattacharjee , Seung-Cheol Lee

The topological Hall effect is a hallmark of topologically non-trivial magnetic textures such as magnetic skyrmions. It quantifies the transverse electric current that is generated once an electric field is applied and occurs as a…

介观与纳米尺度物理 · 物理学 2025-01-14 Börge Göbel , Lennart Schimpf , Ingrid Mertig

The anomalous Hall effect is mainly used to probe the magnetization orientation in ferromagnetic materials. A less explored aspect is the torque acting back on magnetization, an effect that can be important at high currents. The spin-orbit…

介观与纳米尺度物理 · 物理学 2020-06-24 Ioan Tudosa

Spin-orbit torques enable energy-efficient manipulation of magnetization by electric current and hold promise for applications ranging from nonvolatile memory to neuromorphic computing. Here we report the discovery of a giant spin-orbit…

介观与纳米尺度物理 · 物理学 2024-01-11 Eric Arturo Montoya , Xinyao Pei , Ilya N. Krivorotov

Spin-orbit coupling in ferromagnets gives rise to the anomalous Hall effect and the anisotropic magnetoresistance, both of which can be used to create spin-transfer torques in a similar manner as the spin Hall effect. In this paper we show…

材料科学 · 物理学 2014-11-19 Tomohiro Taniguchi , J. Grollier , M. D. Stiles

We present a phenomenological theory of spin-orbit torques in a metallic ferromagnet with spin-relaxing boundaries. The model is rooted in the coupled diffusion of charge and spin in the bulk of the ferromagnet, where we account for the…

介观与纳米尺度物理 · 物理学 2021-07-14 Hector Ochoa , Ricardo Zarzuela , Yaroslav Tserkovnyak

A new type of anomalous Hall effect is shown to arise from the interaction of conduction electrons with dipolar spin waves in ferromagnets. This effect exists even in homogeneous ferromagnets without relativistic spin-orbit coupling. The…

材料科学 · 物理学 2015-10-14 Kei Yamamoto , Koji Sato , Eiji Saitoh , Hiroshi Kohno

The mutual interplay between electron transport and magnetism has attracted considerable attention in recent years, primarily motivated by strategies to manipulate magnetic degrees of freedom electrically, such as spin-orbit torques and…

介观与纳米尺度物理 · 物理学 2023-09-13 Hong Liu , Rhonald Burgos Atencia , Nikhil Medhekar , Dimitrie Culcer

Current-induced spin torque and magnetization dynamics in the presence of spin Hall effect in magnetic textures is studied theoretically. The local deviation of the charge current gives rise to a current-induced spin torque of the form…

介观与纳米尺度物理 · 物理学 2015-05-30 Aurelien Manchon , Kyung-Jin Lee

The intrinsic spin Hall effect (SHE) originates from the topology of the Bloch bands in momentum space. The duality between real space and momentum space calls for a spin Hall effect induced from a real space topology in analogy to the…

介观与纳米尺度物理 · 物理学 2019-04-09 Gen Yin , Yizhou Liu , Yafis Barlas , Jiadong Zang , Roger K. Lake

We demonstrate that spin-orbit coupled electrons in a magnetically doped system exert a spin torque on the local magnetization, without a flowing current, when the chemical potential is modulated in a magnetic field. The spin torque is…

介观与纳米尺度物理 · 物理学 2015-09-17 Kentaro Nomura , Daichi Kurebayashi

Magnetic textures like skyrmions and domain walls coupled to itinerant electrons give rise to rich transport phenomena such as anomalous Hall effect and nonreciprocal current. An interesting case is when the transport coefficient is related…

介观与纳米尺度物理 · 物理学 2024-06-25 Jun Mochida , Hiroaki Ishizuka

A generalized definition of intrinsic and extrinsic transport coefficients is introduced. We show that transport coefficients from the intrinsic origin are solely determined by local electronic structure, and thus the intrinsic spin Hall…

材料科学 · 物理学 2009-11-10 S. Zhang , Z. Yang

We demonstrate that the nontrivial magnetic texture of antiferromagnetic skyrmions (AFM-Sks) promotes a non-vanishing topological spin Hall effect (TSHE) on the flowing electrons. This results in a substantial enhancement of the…

介观与纳米尺度物理 · 物理学 2018-09-03 C. A. Akosa , O. A. Tretiakov , G. Tatara , A. Manchon

To elucidate the origin of anomalous Hall effect (AHE) in ferromagnetic transition metals, we study the intrinsic AHE based on a multi-orbital (xz,yz)-tight-binding model. We find that a large anomalous velocity comes from the off-diagonal…

强关联电子 · 物理学 2009-11-13 H. Kontani , T. Tanaka , K. Yamada

Relativistic heavy ion collisions represent an arena for the probe of various anomalous transport effects. Those effects, in turn, reveal the correspondence between the solid state physics and the high energy physics, which share the common…

高能物理 - 唯象学 · 物理学 2021-04-30 M. A. Zubkov , Z. V. Khaidukov , R. A. Abramchuk

A complete set of the generalized drift-diffusion equations for a coupled charge and spin dynamics in ferromagnets in the presence of extrinsic spin-orbit coupling is derived from the quantum kinetic approach, covering major transport…

介观与纳米尺度物理 · 物理学 2018-05-02 C. O. Pauyac , M. Chshiev , A. Manchon , S. A. Nikolaev
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