期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 324, 期 7, 页码 1449-1452出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2011.12.010
关键词
Domain wall motion; Spin-orbit coupling
资金
- NRF
- MEST [2009-0084542, 2009-0083723, 2010-0014109, 2010-0023798]
- Korea Science and Engineering Foundation (KOSEF)
- Ministry of Science and Technology [M10600000198-06J0000-19810]
- Korea Research Council of Fundamental Science and Technology(KRCF)
- POSCO
- BK21
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.
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