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Magnetic torques generated through spin-orbit coupling promise energy-efficient spintronic devices. It is important for applications to control these torques so that they switch films with perpendicular magnetizations without an external…

We explore the contributions of adiabatic and non-adiabatic spin-transfer torques (STT) of a spin-polarized current to the thermally activated creep motion of domain-walls in a thin (Ga,Mn)(As,P) film with perpendicular anisotropy. For a…

Mesoscale and Nanoscale Physics · Physics 2023-12-27 Lucas Javier Albornoz , Rebeca Díaz Pardo , Aristide Lemaître , Sebastian Bustingorry , Javier Curiale , Vincent Jeudy

In this paper we show that the spin transfer torque can be described by a pseudo magnetic field, proportional to the magnetic moment of the itinerant electrons that enters the Landau-Lifshitz-Gilbert equation in the same way as other…

Mesoscale and Nanoscale Physics · Physics 2008-11-24 Sayeef Salahuddin , Deepanjan Datta , Supriyo Datta

Voltage-driven spin transfer torque in a magnetic tunnel junction comprising magnetic insulating electrodes is studied theoretically. In contrast with the conventional magnetic tunnel junctions comprising transition metal ferromagnets, the…

Mesoscale and Nanoscale Physics · Physics 2012-06-19 Y. Yuan A. Manchon

We explore spin-torque induced magnetic reversal in magnetic tunnel junctions using combined AC and DC spin-current pulses. We calculate the optimal pulse times and current strengths for both AC and DC pulses as well as the optimal AC…

Mesoscale and Nanoscale Physics · Physics 2014-07-22 Tom Dunn , Alex Kamenev

This article reviews static and dynamic interfacial effects in magnetism, focusing on interfacially-driven magnetic effects and phenomena associated with spin-orbit coupling and intrinsic symmetry breaking at interfaces. It provides a…

The exchange interaction between electrons and magnetic spins is considerably enhanced near interfaces, in magnetic multilayers. As a result, a dc current can be used to generate spin oscillations. We review theory and experimental…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 L. Berger

Pure spin currents transport angular momentum without an associated charge flow. This unique property makes them attractive for spintronics applications, such as torque induced magnetization control in nanodevices that can be used for…

A recently proposed exchange-correlation functional (Dewhurst et al. 10.1021/acs.jctc.7b01049) with in density functional theory, which ensures that the exchange-correlation magnetic field is source-free, is shown to give non-zero internal…

Materials Science · Physics 2018-10-17 J. K. Dewhurst , A. Sanna , S. Sharma

We consider theoretically a current flowing perpendicular to interfaces of a spin-valve type ferromagnetic metallic junction. For the first time an effective approach is investigated to calculate a simultaneous action of the two current…

Materials Science · Physics 2009-11-11 R. J. Elliott , E. M. Epshtein , Yu. V. Gulyaev , P. E. Zilberman

We predict an anomalous bias dependence of the spin transfer torque parallel to interface, $T_{||}$, in magnetic tunnel junctions (MTJ), which can be selectively tuned by the exchange splitting. It may exhibit a sign reversal {\it without}…

Other Condensed Matter · Physics 2007-05-23 Ioannis Theodonis , Nicholas Kioussis , Alan Kalitsov , Mairbek Chshiev , William Butler

Altermagnets hold great potential for spintronic applications, yet their intrinsic spin dynamics and associated transport properties remain largely unexplored. Here, we investigate spin-resolved quantum transport in a multi-terminal setup…

Mesoscale and Nanoscale Physics · Physics 2026-02-25 Li-Shuo Liu , Kai Shao , Hai-Dong Li , Xiangang Wan , Wei Chen , D. Y. Xing

The dynamics of a magnetic domain wall in a semi circular nanowire loop is studied by an analytical model and micromagnetic simulations. We find a damped sinusoidal oscillation of the domain wall for small displacement angles around its…

Materials Science · Physics 2011-03-25 Mahdi Jamali , Kyung-Jin Lee , Hyunsoo Yang

We study the influence of an electric current on a continuous non-collinear antiferromagnetic texture. Despite the lack of a net magnetic moment we find that the exchange interaction between conduction electrons and local magnetization…

Mesoscale and Nanoscale Physics · Physics 2009-12-24 A. C. Swaving , R. A. Duine

The spin-orbit torque device is promising as a candidate for next generation magnetic memory, while the static in-plane field needed to induce deterministic switching is a main obstacle for its application in highly integrated circuits.…

We investigate magnetization dynamics in a spin-Hall oscillator using a direct current measurement as well as conventional microwave spectrum analysis. When the current applies an anti-damping spin-transfer torque, we observe a change in…

Mesoscale and Nanoscale Physics · Physics 2016-05-25 S. Langenfeld , V. Tshitoyan , Z. Fang , A. Wells , T. A. Moore , A. J. Ferguson

We investigate the domain wall dynamics of a ferromagnetic wire under the combined influence of a spin-polarized current and magnonic spin-transfer torque generated by an external field, taking also into account Rashba spin-orbit coupling…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 Jacob Linder

Thermally induced magnetization dynamics is currently a flourishing field of research due to its potential application in information technology. We study the paradigmatic system of a magnetic domain wall in a thermal gradient which is…

Superconductivity · Physics 2022-02-08 I. V. Bobkova , A. M. Bobkov , Wolfgang Belzig

We study the role of thermal magnons in the spin and heat transport across a normal-metal/insulating-ferromagnet interface, which is beyond an elastic electronic spin transfer. Using an interfacial exchange Hamiltonian, which couples spins…

Mesoscale and Nanoscale Physics · Physics 2015-04-16 Scott A. Bender , Yaroslav Tserkovnyak

We introduce a method for a combined calculation of charge and vector spin transport of elastically tunneling electrons in magnetic scanning tunneling microscopy (STM). The method is based on the three-dimensional Wentzel-Kramers-Brillouin…

Materials Science · Physics 2016-09-28 Krisztián Palotás , Gábor Mándi , László Szunyogh