Li-8 in GaAs studied with beta-NMR

Li-8 in GaAs studied with beta-NMR

beta-NMR has been used to study isolated spin polarized Li-8(+) in bulk crystalline GaAs. At low temperatures a large fraction (at least 70%) of the Li end up in locations with cubic symmetry (e.g. a tetrahedral interstitial site). The linewidth of the beta-NMR Li-8(+) resonance increases dramatical...

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Những tác giả chính: Dunlop, T, Mansour, A, Salman, Z, Chow, K, Fan, I, Jung, J, Kiefl, R, Kreitman, SR, Levy, C, MacFarlane, W, Morris, G, Parolin, T
Định dạng: Conference item
Được phát hành: 2007
Miêu tả
Tóm tắt:beta-NMR has been used to study isolated spin polarized Li-8(+) in bulk crystalline GaAs. At low temperatures a large fraction (at least 70%) of the Li end up in locations with cubic symmetry (e.g. a tetrahedral interstitial site). The linewidth of the beta-NMR Li-8(+) resonance increases dramatically above 150K, and reaches a maximum at about 290K. These results are consistent with a site change from an interstitial to a substitutional beginning at approximate to 150 K. The field dependence of the linewidth at 100 K is also discussed. (C) 2007 Elsevier B.V. All rights reserved.

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