Correlation between interfacial Dzyaloshinskii-Moriya interaction and interfacial magnetic anisotropy of Pt/Co/MgO structures

被引：19
|
作者：
Kim, Woo-Yeong [1 ,2 ]
Gweon, Hyung Keun [1 ]
Lee, Kyung-Jin [1 ,3 ]
You, Chun-Yeol [2 ]
机构：
[1] Korea Univ, Dept Mat Sci & Engn, Seoul 02841, South Korea
[2] Daegu Gyeongbuk Inst Sci & Technol, Emerging Mat Sci, Daegu 42988, South Korea
[3] Korea Univ, KU KIST Grad Sch Converging Sci & Technol, Seoul 02841, South Korea
来源：
APPLIED PHYSICS EXPRESS | 2019年 / 12卷 / 05期
基金：
新加坡国家研究基金会;
关键词：
CHIRAL SPIN TORQUE; SKYRMIONS;
D O I：
10.7567/1882-0786/ab181c
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We experimentally investigate the correlation between interfacial Dzyaloshinskii-Moriya interaction (iDMI) and interfacial perpendicular magnetic anisotropy (iPMA) of Pt/Co/MgO stacks with varying annealing temperature. We observe that iDMI of whole stack decreases as iPMA of whole stack increases, unexpectedly. However, when we separate contributions from the Pt/Co and Co/MgO interfaces, we find that at the Pt/Co interface, the iDMI increases with increasing iPMA, whereas at the Co/MgO interface, no meaningful correlation between the two interfacial energies is observed. Therefore, the correlation between iDMI and iPMA of whole stack is a consequence of different correlations at different interfaces. (C) 2019 The Japan Society of Applied Physics
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页数：5
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