Spin-transfer torque induced spin waves in antiferromagnetic insulators

被引：22

作者：

Daniels, Matthew W. ^{[1
]}

Guo, Wei ^{[2
,3
]}

Stocks, G. Malcolm ^{[4
]}

Xiao, Di ^{[1
]}

Xiao, Jiang ^{[2
,3
,5
]}

机构：

[1] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA

[2] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

[3] Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China

[4] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[5] Fudan Univ, Collaborat Innovat Ctr Adv Microstruct, Shanghai 200433, Peoples R China

来源：

NEW JOURNAL OF PHYSICS | 2015年 / 17卷

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

spintronics; antiferromagnetism; magnonics; magnon; antiferromagnet; surface; spin-transfer torque; HEISENBERG-ANTIFERROMAGNET; SPINTRONICS; SURFACE; GRAPHENE; NEUTRON;

D O I：

10.1088/1367-2630/17/10/103039

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We explore the possibility of exciting spin waves in insulating antiferromagnetic films by injecting spin current at the surface. We analyze both magnetically compensated and uncompensated interfaces. We find that the spin current induced spin-transfer torque can excite spin waves in insulating antiferromagnetic materials and that the chirality of the excited spin wave is determined by the polarization of the injected spin current. Furthermore, the presence of magnetic surface anisotropy can greatly increase the accessibility of these excitations.

引用

页数：10

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