Enhancement of the anti-damping spin torque efficacy of platinum by interface modification

被引：111

作者：

Minh-Hai Nguyen ^{[1
]}

Pai, Chi-Feng ^{[1
]}

Nguyen, Kayla X. ^{[1
]}

Muller, David A. ^{[1
,2
]}

Ralph, D. C. ^{[1
,2
]}

Buhrman, R. A. ^{[1
]}

机构：

[1] Cornell Univ, Ithaca, NY 14853 USA

[2] Cornell, Kavli Inst, Ithaca, NY 14853 USA

来源：

APPLIED PHYSICS LETTERS | 2015年 / 106卷 / 22期

关键词：

DOMAIN-WALLS; DEVICES; DRIVEN; LOGIC;

D O I：

10.1063/1.4922084

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a strong enhancement of the efficacy of the spin Hall effect (SHE) of Pt for exerting anti-damping spin torque on an adjacent ferromagnetic layer by the insertion of approximate to 0.5 nm layer of Hf between a Pt film and a thin, <= 2 nm, Fe60Co20B20 ferromagnetic layer. This enhancement is quantified by measurement of the switching current density when the ferromagnetic layer is the free electrode in a magnetic tunnel junction. The results are explained as the suppression of spin pumping through a substantial decrease in the effective spin-mixing conductance of the interface, but without a concomitant reduction of the ferromagnet's absorption of the SHE generated spin current. (C) 2015 AIP Publishing LLC.

引用

页数：5

共 3 条

[1] Quantification of the spin-Hall anti-damping torque with a resonance spectrometer
Emori, Satoru
Nan, Tianxiang
Oxholm, Trevor M.
Boone, Carl T.
Jones, John G.
Howe, Brandon M.
Brown, Gail J.
Budil, David E.
Sun, Nian X.
APPLIED PHYSICS LETTERS, 2015, 106 (02)
[2] Anti-damping spin transfer torque through epitaxial nickel oxide
Moriyama, Takahiro
Takei, So
Nagata, Masaki
Yoshimura, Yoko
Matsuzaki, Noriko
Terashima, Takahito
Tserkovnyak, Yaroslav
Ono, Teruo
APPLIED PHYSICS LETTERS, 2015, 106 (16)
[3] The positive correlation between interface Dzyaloshinskii-Moriya interaction and damping-like spin Hall torque in the Ta/Pt/CoFeB/MgO/Ta system
Zhang, Qihan
Chen, Yifei
Zheng, Yudiang
Cao, Jiangwei
Xue, Desheng
Fan, Xiaolong
APPLIED PHYSICS EXPRESS, 2019, 12 (10)

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