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Current induced spin-orbit torques driven by the conventional spin Hall effect are widely used to manipulate the magnetization. This approach, however, is nondeterministic and inefficient for the switching of magnets with perpendicular…

Optical orientation is a highly efficient tool for the generation of nonequilibrium spin polarization in semiconductors. Combined with spin-polarized transport it offers new functionalities for conventional electronic devices, such as pn…

其他凝聚态物理 · 物理学 2008-11-04 Jaroslav Fabian , Igor Zutic

The shift current photovoltaic effect is conventionally understood as the real-space displacement of a wave packet induced by photoexcitation. However, this interpretation becomes insufficient in flat-band systems, where quasiparticles are…

材料科学 · 物理学 2025-02-25 Zhuocheng Lu , Zhihao Gong , Jingshan Qi , Hua Wang , Kai Chang

In 1996, Berger and Slonczewski independently predicted that a large enough spin-polarized dc current density sent perpendicularly through a ferromagnetic layer could produce magnetic excitations (spin-waves) or reversal of magnetization…

材料科学 · 物理学 2009-11-10 J. Bass , S. Urazhdin , Norman O. Birge , W. P. Pratt

The optical generation of nonequilibrium spin magnetization plays a crucial role in advancing spintronics, providing ultrafast control of magnetization dynamics without the need for magnetic fields. Here, we demonstrate the feasibility of…

介观与纳米尺度物理 · 物理学 2024-09-19 Sayan Sarkar , Sunit Das , Debottam Mandal , Amit Agarwal

We report a theoretical study of the second harmonic generation in a noncollinearly magnetized conductive medium with equilibrium spin current. The hydrodynamic model is used to unravel the mechanism of a novel effect of the double…

其他凝聚态物理 · 物理学 2018-04-18 E. A. Karashtin , A. A. Fraerman

Altermagnets, a recently identified class of magnetic materials, possess a spin-split Fermi surface that results in the so-called spin splitter effect, enabling the generation of a spin current transverse to the injection direction and…

介观与纳米尺度物理 · 物理学 2025-04-17 Konstantinos Sourounis , Aurélien Manchon

In metallic ferromagnets, an electric current is accompanied by a flux of angula r momentum, also called spin current. In multilayers, spatial variations of the spin current correspond to drive torques exerted on a magnetic layer. These…

介观与纳米尺度物理 · 物理学 2009-10-31 L. Berger

Opposite to the common idea of a magnetic order requirement to obtain spin current propagation, materials with no magnetic ordering have also been revealed to be efficient spin conductors. In this work, we investigate the spin current…

超导电性 · 物理学 2022-01-11 Vinícius S. U. A. Vargas , Antônio R. Moura

This paper presents a study of dc photocurrents in biased insulators to the third order in the electric field. We find three photocurrents which are characterized by physical divergences of the third-order free-electron polarization…

介观与纳米尺度物理 · 物理学 2019-08-07 Benjamin M. Fregoso

We propose a method for inducing magnetization reversal using an AC spin current polarized perpendicular to the equilibrium magnetization of the free magnetic layer. We show that the critical AC spin current is significantly smaller than…

介观与纳米尺度物理 · 物理学 2015-06-05 Tom Dunn , Alex Kamenev

We consider the spin-current driven dynamics of a magnetic nanostructure in a conductive magnetic wire under a heat gradient in an open circuit, spin Seebeck effect geometry. It is shown that the spin-current scattering results in a…

介观与纳米尺度物理 · 物理学 2015-05-20 Chenglong Jia , Jamal Berakdar

This study explores the time-dependent spin transport phenomena in magnetic heterostructures under alternating currents (AC), advancing the relatively underdeveloped field of alternating spintronics. Employing a time-dependent spin…

介观与纳米尺度物理 · 物理学 2026-01-13 Yunwen Liu , Jiang Xiao

Electromagnon is the spin wave in multiferroic materials and is known to accompany electric polarization due to the cross correlation between the charge and spin. Here, we theoretically show that the electromagnons also induce dc current…

强关联电子 · 物理学 2019-12-30 Takahiro Morimoto , Naoto Nagaosa

Magnetization switching due to a current-pulse in symmetric and asymmetric spin valves is studied theoretically within the macrospin model. The switching process and the corresponding switching parameters are shown to depend significantly…

介观与纳米尺度物理 · 物理学 2010-04-12 Pavel Balaz , Martin Gmitra , Jozef Barnas

We investigate the influence of a light beam carrying an orbital angular momentum on the current density of an electron wave packet in a semiconductor stripe. It is shown that due to the photo-induced torque the electron density can be…

光学 · 物理学 2013-02-19 J. Waetzel , A. S. Moskalenko , J. Berakdar

Electron-magnon coupling at the interface between a normal metal and a magnetically ordered insulator modifies the electrical conductivity of the normal metal, an effect known as spin-Hall magnetoresistance. It can also facilitate…

介观与纳米尺度物理 · 物理学 2026-01-21 Oliver Franke , Duje Akrap , Piet W. Brouwer

The inductance of spintronic devices that transport charge neutral spin currents is discussed. It is known that in a media that contains charge neutral spins, a time-varying electric field induces a spin current. We show that since the spin…

介观与纳米尺度物理 · 物理学 2014-03-18 Wei Chen

Spin-motive force, i.e., the electric current induced by magnetization dynamics, is theoretically studied beyond the Thouless-pump paradigm. In contrast to the linear-response regime, where the induced current is purely AC, we show that…

介观与纳米尺度物理 · 物理学 2026-03-13 Tomonari Meguro , Hiroaki Ishizuka , Kentaro Nomura

Spin pumping is becoming an established method to generate voltages from magnetic dynamics. The standard detection method of spin pumping is based on open circuit voltage measurement across ferromagnetic (FM) and non-magnetic (NM)…

其他凝聚态物理 · 物理学 2019-01-29 K. Rogdakis , N. Alfert , A. Srivastava , J. W. A. Robinson , M. G. Blamire , L. F. Cohen , H. Kurebayashi