Photoinduced spin angular momentum transfer into an antiferromagnetic insulator

被引：29

作者：

Fan, Y. ^{[1
]}

Ma, X. ^{[1
]}

Fang, F. ^{[1
]}

Zhu, J. ^{[2
,3
]}

Li, Q. ^{[2
,3
]}

Ma, T. P. ^{[2
,3
]}

Wu, Y. Z. ^{[2
,3
]}

Chen, Z. H. ^{[2
,3
]}

Zhao, H. B. ^{[4
]}

Luepke, G. ^{[1
]}

机构：

[1] Coll William & Mary, Dept Appl Sci, Williamsburg, VA 23187 USA

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

[3] Fudan Univ, Adv Mat Lab, Shanghai 200433, Peoples R China

[4] Fudan Univ, Dept Opt Sci & Engn, Minist Educ, Key Lab Micro & Nano Photon Struct, Shanghai 200433, Peoples R China

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 09期

关键词：

FERROMAGNETIC-RESONANCE LINEWIDTH; EXCHANGE BIAS; TEMPERATURE-DEPENDENCE; ANISOTROPY;

D O I：

10.1103/PhysRevB.89.094428

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spin angular momentum transfer into an antiferromagnetic (AFM) insulator is observed in a single-crystalline Fe/CoO/MgO(001) heterostructure by time-resolved magneto-optical Kerr effect. The transfer process is mediated by the Heisenberg exchange coupling between Fe and CoO spins. Spin angular momentum transfer to ordered AFM spins is independent of the external magnetic field and enhances the spin precession damping in Fe, which remains nearly invariant with temperature.

引用

页数：6

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