Dynamics of photo-enhanced magneto-crystalline anisotropy in diluted ferromagnetic GaMnAs

Luo J.; Zheng H.Z.; Shen C.Zhang H.Zhu K.Zhu H.Liu J.Li G.R.Ji Y.Zhao J.H.

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Dynamics of photo-enhanced magneto-crystalline anisotropy in diluted ferromagnetic GaMnAs

机译：Dynamics of photo-enhanced magneto-crystalline anisotropy in diluted ferromagnetic GaMnAs

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By chopping a pump beam in conventional time-resolved Kerr rotation (TRKR) experiments and measuring the time evolution of M-shaped "major" hysteresis loops of magnetic linear dichroism (ΔMLD=MLD _(pump-on)-MLD_(pump-off)), the differential MLD signal in the presence and the absence of the pump beam, we studied the dynamics of photo-enhanced magneto-crystalline anisotropy, and found that its very long recovering time (much longer than 13 ns) might reflect the nature of the coherent coupling between photo-excited holes and localized spins in the d shell of manganese.

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来源
《Solid State Communications》 |2010年第30期|1419-1421|共3页
作者
Luo J.; Zheng H.Z.; Shen C.Zhang H.Zhu K.Zhu H.Liu J.Li G.R.Ji Y.Zhao J.H.;
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作者单位

State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China;

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正文语种英语
中图分类固体物理学;
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Magnetic films; Magnetic linear dichroism; Semiconductors; Time-resolved Kerr rotation;

Dynamics of photo-enhanced magneto-crystalline anisotropy in diluted ferromagnetic GaMnAs

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