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We theoretically investigate the supercurrent-induced magnetization dynamics of a two-dimensional lattice of ferromagnetically ordered spins placed on a conventional superconductor with broken spatial inversion symmetry and strong…

Mesoscale and Nanoscale Physics · Physics 2016-06-29 Kjetil M. D. Hals

Spin polarized currents are employed to efficiently manipulate the magnetization of ferromagnetic ultrathin films by exerting a torque on it. If the spin currents are generated by means of the spin-orbit interaction between a ferromagnetic…

Mesoscale and Nanoscale Physics · Physics 2020-04-07 R. Guerrero , A. Anadon , A. Gudin , J. M. Diez , P. Olleros-Rodriguez , M. Muñoz , R. Miranda , J. Camarero , P. Perna

The covariant Dirac equation and its solutions show that rotation and acceleration can be used to generate and control spin currents.

Quantum Physics · Physics 2015-06-15 Giorgio Papini

We introduce the general formalism to describe spin torques induced by the supercurrents injected from the adjacent superconducting electrodes into the spin-textured ferromagnets. By considering the adiabatic limit for the equal-spin…

Superconductivity · Physics 2018-08-28 I. V. Bobkova , A. M. Bobkov , M. A. Silaev

We theoretically investigate the generation of spin current from a uniformly rotating body with impurity scattering on the basis of the spin dependent transport equation. The spin current is created mainly in the radial direction when a…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 Mamoru Matsuo , Jun'ichi Ieda , Eiji Saitoh , Sadamichi Maekawa

In this article, formulas for the calculation of force and torque between two circular filaments arbitrarily oriented in space were derived by using Kalantarov-Zeitlin's method. Formulas are presented in an analytical form through integral…

Applied Physics · Physics 2022-03-18 Kirill Poletkin

We present a microscopic theory of spin-dependent motive force ("spin motive force") induced by magnetization dynamics in a conducting ferromagnet, by taking account of spin relaxation of conduction electrons. The theory is developed by…

Mesoscale and Nanoscale Physics · Physics 2011-11-10 Junya Shibata , Hiroshi Kohno

Spin torque oscillators are conventionally described by the Landau-Lifshitz-Gilbert-Slonczewski (LLGS) equation. However, at the onset of oscillations, the predictions of the conventional LLGS equation differ qualitatively from experimental…

Mesoscale and Nanoscale Physics · Physics 2024-01-17 Pieter M. Gunnink , Tim Ludwig , Rembert A. Duine

We show how the spin-transfer torque generated by an ac voltage may be used to excite a paramagnetic resonance of an atomic spin deposited on a metallic surface. This mechanism is independent of the environment of the atom and may explain…

Mesoscale and Nanoscale Physics · Physics 2019-03-06 Alexey M. Shakirov , Alexey N. Rubtsov , Pedro Ribeiro

In a nanomagnet (whose total spin S< 1000), very small polarized currents can lead to magnetic reversal. Treating on the same footing the transport and magnetic properties of a nanomagnet connected to magnetic leads via tunneling barriers,…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 X. Waintal , O. Parcollet

The concept of impedance, which characterises the current response to a periodical driving, is introduced in the context of stochastic transport. In particular, we calculate the impedance for an exactly solvable model, namely the stochastic…

Statistical Mechanics · Physics 2020-06-24 Bart Cleuren , Karel Proesmans

The Edelstein effect is the origin of the spin-orbit torque: a current-induced torque that is used for the electrical control of ferromagnetic and antiferromagnetic materials. This effect originates from the relativistic spin-orbit…

Current-induced torques originating from earth-abundant 3d elements offer a promising avenue for low-cost and sustainable spintronic memory and logic applications. Recently, orbital currents -- transverse orbital angular momentum flow in…

Materials Science · Physics 2025-02-03 Silvia Damerio , Can O. Avci

We propose a new approach to derive spin torque in systems of broken inversion symmetry. It uses the concepts of asymmetric and directional spin-spin interactions to obtain their effective fields. We applied the effective fields into the…

Strongly Correlated Electrons · Physics 2019-09-30 H. Y. Kwon , S. P. Kang , N. J. Kim , C. K. Lee , C. Won

According to the spin-torque model, current-driven magnetic dynamics in ferromagnetic multilayers is determined by the transfer of electron spin perpendicular to the layers' magnetizations. By separating the largest contributions to the…

Materials Science · Physics 2007-05-23 S. Urazhdin

We propose a spin transport experiment to measure the low-energy excitations in insulators with spin degrees of freedom, with a focus on detecting ground states that lack magnetic order. A general formalism to compute the spin-current from…

Strongly Correlated Electrons · Physics 2015-10-21 Shubhayu Chatterjee , Subir Sachdev

Symmetry and magnitude of spin-orbit torques (SOT), i.e., current-induced torques on the magnetization of systems lacking inversion symmetry, are investigated in a fully relativistic linear response framework based on the Kubo formalism. By…

Materials Science · Physics 2016-08-12 Sebastian Wimmer , Kristina Chadova , Marten Seemann , Diemo Ködderitzsch , Hubert Ebert

In this paper, current-induced spin polarization for two-dimensional electron gas with a general spin-orbit interaction is investigated. For isotropic energy spectrum, the in-plane current-induced spin polarization is found to be dependent…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 C. M. Wang , H. T. Cui , Q. Lin

The distribution is calculated of the electron spin polarization under current-driven spin injection from a probe to a ferromagnetic film. It is shown that the main parameters determining difference of the spin polarization from the…

Materials Science · Physics 2009-12-15 S. G. Chigarev , E. M. Epshtein , Yu. V. Gulyaev , A. I. Panas , V. G. Shofman , P. E. Zilberman

Using irreversible thermodynamics we show that current-induced spin transfer torque within a magnetic domain implies spin pumping of current within that domain. This has experimental implications for samples both with conducting leads and…

Other Condensed Matter · Physics 2009-11-13 Wayne M. Saslow