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Spin Dynamics of Low Phosphorus-doped Silicon in the Low-Temperature and High-Field Limits
http://hdl.handle.net/10098/2743
http://hdl.handle.net/10098/2743faa60f0b-0870-4a80-9a17-73ffa276b62b
名前 / ファイル | ライセンス | アクション |
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FIR_FU11-11.pdf (1.0 MB)
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Item type | 研究報告書 / Research Paper(1) | |||||
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公開日 | 2010-11-12 | |||||
タイトル | ||||||
タイトル | Spin Dynamics of Low Phosphorus-doped Silicon in the Low-Temperature and High-Field Limits | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_18ws | |||||
資源タイプ | research report | |||||
著者 |
MIZUSAKI, Takao
× MIZUSAKI, Takao× SONG, Myeonghun× JEONG, Minki× KANG, Byeongki× LEE, Soonchil× UENO, Tomohiro× MATSUBARA, Akira× FUJII, Yutaka× MITSUDO, Seitaro× CHIBA, Meiro |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Spin dynamics of shallow-trapped donor electron spins in Si:P (phosphorous-doped silicon) has been studied by high frequency ESR. A sample with the donor concentration 6.5 x 1016 cm-3, where the sample is a insulator at low temperatures and the donor is almost isolated, was investigated at 2.87 T (80 GHz) from 48 K to 1.8 K by cw-ESR with field modulation. At low temperatures, where the spin-lattice relaxation time T1 changes in many orders of magnitude, the resonance line shape changed from the usual derivative form of the absorption line at high temperatures to the non-derivative shape caused by the passage effects at low temperatures. These complex behaviors in the resonance line shape have made it possible to estimate the spin-lattice relaxation time T1. We numerically solved the Bloch equations for a given inhomogeneous line shape and obtained the ESR absorption and dispersion signal as a function of the spin lattice relaxation time T1. We analytically solve Bloch equations at the low-temperature limit (εF >>1) to understand spin dynamics. The observed T1 at a high field of 2.87 T is consistent with the reported T1 for samples with the low dopant concentration limit at 0.32 ~ 0.33 T after the theoretical correction for the magnetic field dependence. Possible dynamic nuclear polarization effect on 31P nuclear spin was observed in asymmetry of ESR intensities between two hyperfine states. | |||||
書誌情報 |
遠赤外領域開発研究 巻 11, p. 84-98, 発行日 2010-07 |
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書誌レコードID | ||||||
識別子タイプ | NCID | |||||
関連識別子 | TD00005713 |