Rashba spinorbit coupling effects on a current-induced domain wall motion

Jisu Ryu; Soo Man Seo; Kyung Jin Lee; Hyun Woo Lee

doi:10.1016/j.jmmm.2011.12.010

Rashba spinorbit coupling effects on a current-induced domain wall motion

Jisu Ryu, Soo Man Seo, Kyung Jin Lee, Hyun Woo Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

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 spinorbit 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 α and the non-adiabaticity parameter β.

Original language	English
Pages (from-to)	1449-1452
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	324
Issue number	7
DOIs	https://doi.org/10.1016/j.jmmm.2011.12.010
Publication status	Published - 2012 Apr

Bibliographical note

Funding Information:
We thank Myung-Joong Hwang for helpful comments on the manuscript. This work was supported by Mid-career Researcher Program through NRF grant funded by the MEST( 2009-0084542, 2009-0083723, 2010-0014109, 2010-0023798 ), the Korea Science and Engineering Foundation (KOSEF) through the National Research Laboratory Program funded by the Ministry of Science and Technology ( No. M10600000198-06J0000-19810 ), the Degree of Research Center(DRC) Program funded by the Korea Research Council of Fundamental Science and Technology(KRCF), POSCO and BK21.

Keywords

Domain wall motion
Spinorbit coupling

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2011.12.010

Cite this

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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 spinorbit 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 α and the non-adiabaticity parameter β.",

keywords = "Domain wall motion, Spinorbit coupling",

author = "Jisu Ryu and Seo, {Soo Man} and Lee, {Kyung Jin} and Lee, {Hyun Woo}",

note = "Funding Information: We thank Myung-Joong Hwang for helpful comments on the manuscript. This work was supported by Mid-career Researcher Program through NRF grant funded by the MEST( 2009-0084542, 2009-0083723, 2010-0014109, 2010-0023798 ), the Korea Science and Engineering Foundation (KOSEF) through the National Research Laboratory Program funded by the Ministry of Science and Technology ( No. M10600000198-06J0000-19810 ), the Degree of Research Center(DRC) Program funded by the Korea Research Council of Fundamental Science and Technology(KRCF), POSCO and BK21.",

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AB - 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 spinorbit 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 α and the non-adiabaticity parameter β.

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Rashba spinorbit coupling effects on a current-induced domain wall motion

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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