Observation of Long Relaxation from Fe0(3d8) to Fe+(3d7) by Electron Spin Resonance Measurement
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概要
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We studied the change in the 3d-shell configurations of Fe in B-doped Si under illumination by electron spin resonance (ESR) measurement. ESR signals originating from Fe$_{i}^{+}$(3d7) and Fe$_{i}^{0}$(3d8) were observed in Fe- and B-doped Si. The ESR signal of Fe$_{i}^{+}$(3d7) disappeared and the signal intensity of Fe$_{i}^{0}$(3d8) increased under illumination. These changes of the ESR signals under illumination were caused by the change in the charge state from Fe$_{i}^{+}$(3d7) to Fe$_{i}^{0}$(3d8) due to the capture of an electron. Subsequently, the process of recovery from Fe$_{i}^{0}$(3d8) to Fe$_{i}^{+}$(3d7) due to the capture of a hole was observed after the light was turned off. We found that the relaxation time from Fe$_{i}^{0}$(3d8) to Fe$_{i}^{+}$(3d7) was approximately 30 s at 8 K. This was much longer than the lifetime of a free hole.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-01-15
著者
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Kamiura Yoichi
Faculty Of Engineering Okayama University
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ISHIYAMA Takeshi
Faculty of Engineering, Okayama University
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Hiramatsu Toshinobu
Faculty Of Engineering Okayama University
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Yamashita Yoshifumi
Faculty Of Engineering Okayama University
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Yamashita Yoshifumi
Faculty of Engineering, Okayama University, 3-1-1 Tsushima-naka, Okayama 700-8530, Japan
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Kamiura Yoichi
Faculty of Engineering, Okayama University, 3-1-1 Tsushima-naka, Okayama 700-8530, Japan
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Ishiyama Takeshi
Faculty of Engineering, Okayama University, 3-1-1 Tsushima-naka, Okayama 700-8530, Japan
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Hiramatsu Toshinobu
Faculty of Engineering, Okayama University, 3-1-1 Tsushima-naka, Okayama 700-8530, Japan
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