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The effects of the spin-orbit interaction on the tunneling magnetoresistance of magnetic tunnel junctions are investigated. A model in which the experimentally observed two-fold symmetry of the anisotropic tunneling magnetoresistance (TAMR)…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. Matos-Abiague , J. Fabian

We derive an intrinsic contribution to the non-adiabatic spin torque for non-uniform magnetic textures. It differs from previously considered contributions in several ways and can be the dominant contribution in some models. It does not…

Mesoscale and Nanoscale Physics · Physics 2015-12-22 Kyoung-Whan Kim , Kyung-Jin Lee , Hyun-Woo Lee , M. D. Stiles

A three-dimensional self-consistent spin transport model is developed, which includes both tunnelling transport, as well as metallic transport. Using the spin accumulation computed either side of a tunnel barrier, spin torques are obtained,…

Mesoscale and Nanoscale Physics · Physics 2023-02-01 Serban Lepadatu , Alexey Dobrynin

An antiferromagnet is a promising material for spin-orbit torque generation. Earlier studies of the spin-orbit torque in an antiferromagnet are limited to collinear spin configurations. We calculate the spin-orbit torque in an…

Mesoscale and Nanoscale Physics · Physics 2018-04-04 Suik Cheon , Hyun-Woo Lee

Spin-orbit torques in noncentrosymmetric polycrystalline magnetic heterostructures are usually described in terms of field-like and damping-like torques. However, materials with a lower symmetry point group can exhibit torques whose…

Materials Science · Physics 2023-03-29 Diego García Ovalle , Armando Pezo , Aurélien Manchon

Transition metal dichalcogenides (TMDs) are promising materials for efficient generation of current-induced spin-orbit torques on an adjacent ferromagnetic layer. Numerous effects, both interfacial and bulk, have been put forward to explain…

Voltage-driven spin transfer torques in magnetic tunnel junctions provide an outstanding tool to design advanced spin-based devices for memory and reprogrammable logic applications. The non-linear voltage dependence of the torque has a…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 A. Manchon

We investigate the dynamics of Fe adatoms and dimers deposited on the Cu(111) metallic surface in the presence of spin-orbit coupling, within time-dependent density functional theory. The \textit{ab initio} results provide…

Mesoscale and Nanoscale Physics · Physics 2017-10-03 Filipe S. M. Guimarães , Manuel dos Santos Dias , Benedikt Schweflinghaus , Samir Lounis

The effects of interplay between spin-orbit coupling and Zeeman splitting on weak localisation and universal conductance fluctuations in lateral semiconductor quantum dots are analysed: All possible symmetry classes of corresponding random…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 I. L. Aleiner , Vladimir I. Fal'ko

In systems with strong spin-orbit coupling, the relationship between spin-transfer torque and the divergence of the spin current is generalized to a relation between spin transfer torques, total angular momentum current, and mechanical…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 Paul M. Haney , M. D. Stiles

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 address the nature of spin-orbit torques at the magnetic surfaces of topological insulators, using both Kubo formula and Keldysh formalism. Through the analysis of the derived spin-charge equations, we find that the so-called Dirac…

Mesoscale and Nanoscale Physics · Physics 2017-07-11 P. B. Ndiaye , C. A. Akosa , M. H. Fischer , A. Vaezi , E-A. Kim , A. Manchon

Spin-orbit coupling stands as a pivotal determinant in the realm of condensed matter physics. In recent, its profound influence on spin dynamics opens up a captivating arena with promising applications. Notably, the topological…

Mesoscale and Nanoscale Physics · Physics 2024-08-06 Taekoo Oh , Naoto Nagaosa

We present an experimental study of macroscopic and microscopic magnetic anisotropy of a spin tetramer system \cso using torque magnetometry and ESR spectroscopy. Large rotation of macroscopic magnetic axes with temperature observed from…

Strongly Correlated Electrons · Physics 2016-08-08 Mirta Herak , Dijana Žilić , Dubravka Matković Čalogović , Helmuth Berger

In lateral quantum dots, the combined effect of both Dresselhaus and Bychkov-Rashba spin orbit coupling is equivalent to an effective magnetic field B_so which has the opposite sign for s_z=1/2 spin electrons. When the external magnetic…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 J. Konemann , R. J. Haug , D. K. Maude , V. I. Fal'ko , B. L. Altshuler

Spin relaxation is investigated theoretically in two-dimensional systems. Various semiconductor structures of both n- and p-types are studied in detail. The most important spin relaxation mechanisms are considered. The spin relaxation times…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 N. S. Averkiev , L. E. Golub , M. Willander

We investigate the charge conductivity and current-induced spin polarization on the surface state of a three-dimensional topological insulator by including the hexagonal warping effect of Fermi surface both in classical and quantum…

Mesoscale and Nanoscale Physics · Physics 2011-11-01 C. M. Wang , F. J. Yu

We have studied the spin rotation coupling(SRC) as an ingredient to explain different spin related issues. This special kind of coupling can play the role of a Dresselhaus like coupling in certain conditions. Consequently, one can control…

Mesoscale and Nanoscale Physics · Physics 2013-10-31 Debashree Chowdhury , B. Basu

The subject of this study is spin transport through a molecular orbital connected to two leads, and coupled via exchange interaction with a precessing anisotropic molecular spin in a constant magnetic field. The inelastic spin-flip…

Mesoscale and Nanoscale Physics · Physics 2025-10-02 Milena Filipović

Spin dependent transport in a multi-terminal mesoscopic ring is investigated in presence of Rashba and Dresselhaus spin-orbit interactions. Within a tight-binding framework we use a general spin density matrix formalism to evaluate all…

Mesoscale and Nanoscale Physics · Physics 2013-10-31 Moumita Dey , Santanu K. Maiti , Sreekantha Sil , S. N. Karmakar