TY - JOUR
T1 - Magnetic domain wall motion across a step of Dzyaloshinskii-Moriya interaction
AU - Hong, Ik Sun
AU - Lee, Seo Won
AU - Lee, Kyung 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 ].
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
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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 -