Magnetic domain wall motion across a step of Dzyaloshinskii-Moriya interaction

Ik Sun Hong; Seo Won Lee; Kyoung Jin Lee

doi:10.1016/j.cap.2017.08.024

Magnetic domain wall motion across a step of Dzyaloshinskii-Moriya interaction

Ik Sun Hong, Seo Won Lee, Kyoung Jin Lee

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

7 Citations (Scopus)

Abstract

Magnetic domain wall motion is numerically studied in a nanowire with a Dzyaloshinskii-Moriya interaction (DMI) step at which DMI varies in real space. The spatially modulated DMI results in the formation of asymmetric domain wall energy landscape across the step, which affects the domain wall motion significantly. Utilizing this DMI step, we propose a domain wall memory device where the switching of up- and down-state is induced by a spin-orbit spin-transfer torque (SOT)-driven domain wall motion. This domain wall memory device is expected to have a high switching efficiency.

Original language	English
Pages (from-to)	1576-1581
Number of pages	6
Journal	Current Applied Physics
Volume	17
Issue number	12
DOIs	https://doi.org/10.1016/j.cap.2017.08.024
Publication status	Published - 2017 Dec

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) [ NRF-2015M3D1A1070465 , NRF-2017R1A2B2006119 ]; KU-KIST School Project, and the DGIST R&D Program of the Ministry of Science, ICT and Future Planning [ 17-BT-02 ].

Publisher Copyright:
© 2017 Elsevier B.V.

Keywords

Domain wall memory device
Domain wall motion
Dzyaloshinskii-Moriya interaction
Magnonic crystal
Spin-orbit spin-transfer torque

ASJC Scopus subject areas

General Materials Science
General Physics and Astronomy

Access to Document

10.1016/j.cap.2017.08.024

Cite this

@article{71ac84c5fc1a4bc89a60b0e64d3e5a26,

title = "Magnetic domain wall motion across a step of Dzyaloshinskii-Moriya interaction",

abstract = "Magnetic domain wall motion is numerically studied in a nanowire with a Dzyaloshinskii-Moriya interaction (DMI) step at which DMI varies in real space. The spatially modulated DMI results in the formation of asymmetric domain wall energy landscape across the step, which affects the domain wall motion significantly. Utilizing this DMI step, we propose a domain wall memory device where the switching of up- and down-state is induced by a spin-orbit spin-transfer torque (SOT)-driven domain wall motion. This domain wall memory device is expected to have a high switching efficiency.",

keywords = "Domain wall memory device, Domain wall motion, Dzyaloshinskii-Moriya interaction, Magnonic crystal, Spin-orbit spin-transfer torque",

author = "Hong, {Ik Sun} and Lee, {Seo Won} and Lee, {Kyoung Jin}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) [ NRF-2015M3D1A1070465 , NRF-2017R1A2B2006119 ]; KU-KIST School Project, and the DGIST R&D Program of the Ministry of Science, ICT and Future Planning [ 17-BT-02 ]. Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = dec,

doi = "10.1016/j.cap.2017.08.024",

language = "English",

volume = "17",

pages = "1576--1581",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier B.V.",

number = "12",

}

TY - JOUR

T1 - Magnetic domain wall motion across a step of Dzyaloshinskii-Moriya interaction

AU - Hong, Ik Sun

AU - Lee, Seo Won

AU - Lee, Kyoung Jin

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) [ NRF-2015M3D1A1070465 , NRF-2017R1A2B2006119 ]; KU-KIST School Project, and the DGIST R&D Program of the Ministry of Science, ICT and Future Planning [ 17-BT-02 ]. Publisher Copyright: © 2017 Elsevier B.V.

PY - 2017/12

Y1 - 2017/12

N2 - Magnetic domain wall motion is numerically studied in a nanowire with a Dzyaloshinskii-Moriya interaction (DMI) step at which DMI varies in real space. The spatially modulated DMI results in the formation of asymmetric domain wall energy landscape across the step, which affects the domain wall motion significantly. Utilizing this DMI step, we propose a domain wall memory device where the switching of up- and down-state is induced by a spin-orbit spin-transfer torque (SOT)-driven domain wall motion. This domain wall memory device is expected to have a high switching efficiency.

AB - Magnetic domain wall motion is numerically studied in a nanowire with a Dzyaloshinskii-Moriya interaction (DMI) step at which DMI varies in real space. The spatially modulated DMI results in the formation of asymmetric domain wall energy landscape across the step, which affects the domain wall motion significantly. Utilizing this DMI step, we propose a domain wall memory device where the switching of up- and down-state is induced by a spin-orbit spin-transfer torque (SOT)-driven domain wall motion. This domain wall memory device is expected to have a high switching efficiency.

KW - Domain wall memory device

KW - Domain wall motion

KW - Dzyaloshinskii-Moriya interaction

KW - Magnonic crystal

KW - Spin-orbit spin-transfer torque

UR - http://www.scopus.com/inward/record.url?scp=85028925204&partnerID=8YFLogxK

U2 - 10.1016/j.cap.2017.08.024

DO - 10.1016/j.cap.2017.08.024

M3 - Article

AN - SCOPUS:85028925204

SN - 1567-1739

VL - 17

SP - 1576

EP - 1581

JO - Current Applied Physics

JF - Current Applied Physics

IS - 12

ER -

Magnetic domain wall motion across a step of Dzyaloshinskii-Moriya interaction

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this