Photoinduced Spin Precession in Fe/GaAs(001) Heterostructure with Low Power Excitation
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概要
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Pronounced spin precessions are observed in Fe films grown on n-doped GaAs(001) with a tailored Schottky interface under low-energy ultrafast laser excitation, more than two orders of magnitude smaller than typically required in heat-induced excitation. Pump wavelength dependence of the precession amplitude shows that the fast drift of the optically excited free carriers in the narrow depletion layer of GaAs is the key mechanism to generate the significant transient magnetic field triggering spin precessions.
- 2013-07-25
著者
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Lu Jun
State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Beijing 100083, China
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Yuan Haochen
Shanghai Ultra-Precision Optical Manufacturing Engineering Research Center, and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China
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Gao Haixia
State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Beijing 100083, China
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Gong Yu
Department of Physics & Astronomy, Hunter College of the City University of New York, New York, NY 10065, U.S.A.
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Zhang Xinhui
State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Beijing 100083, China
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Zhao Jianhua
State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Beijing 100083, China
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Ren Yuhang
Department of Physics & Astronomy, Hunter College of the City University of New York, New York, NY 10065, U.S.A.
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Zhao Haibin
Shanghai Ultra-Precision Optical Manufacturing Engineering Research Center, and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China
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Chen Liangyao
Shanghai Ultra-Precision Optical Manufacturing Engineering Research Center, and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China
関連論文
- Photoinduced Spin Precession in Fe/GaAs(001) Heterostructure with Low Power Excitation
- Photoinduced Spin Precession in Fe/GaAs(001) Heterostructure with Low Power Excitation
- Photoinduced Spin Precession in Fe/GaAs(001)Heterostructure with Low Power Excitation