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Rashba spin-orbit coupling effects on a current-induced domain wall motion SCIE SCOPUS

Title
Rashba spin-orbit coupling effects on a current-induced domain wall motion
Authors
Ryu, JSeo, SMLee, KJLee, HW
Date Issued
2012-04
Publisher
ELSEVIER SCIENCE BV
Abstract
A current-induced domain wall motion in magnetic nanowires with a strong structural inversion asymmetry [I.M. Miron, T. Moore, H. Szambolics, L.D. Buda-Prejbeanu, S. Auffret, B. Rodmacq, S. Pizzini, J. Vogel, M. Bonfim, A. Schuhl, G. Gaudin, Nat. Mat. 10 (2011) 419] seems to have novel features such as the domain wall motion along the current direction or the delay of the onset of the Walker breakdown. In such a highly asymmetric system, the Rashba spin-orbit coupling (RSOC) may affect a domain wall motion. We studied theoretically the RSOC effects on a domain wall motion and found that the RSOC, indeed, can induce the domain wall motion along the current direction in certain situations. It also delays the Walker breakdown and for a strong RSOC, the Walker breakdown does not occur at all. The RSOC effects are sensitive to the magnetic anisotropy of nanowires and also to the ratio between the Gilbert damping parameter alpha and the non-adiabaticity parameter beta. (C) 2011 Elsevier B.V. All rights reserved.
Keywords
Domain wall motion; Spin-orbit coupling; CURRENT INJECTION; NANOWIRES; DYNAMICS; LAYER
URI
https://oasis.postech.ac.kr/handle/2014.oak/15950
DOI
10.1016/j.jmmm.2011.12.010
ISSN
0304-8853
Article Type
Article
Citation
Journal of Magnetism and Magnetic Materials, vol. 324, no. 7, page. 1449 - 1452, 2012-04
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