Direct observation of the donor nuclear spin in a near-gap bound exciton transition: P31 in highly enriched S28i
作者： M. L. W. Thewalt , A. Yang , M. Steger , D. Karaiskaj , M. Cardona
DOI: 10.1063/1.2723181
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摘要: We report on ultrahigh resolution studies of the bound exciton states associated with shallow acceptor B and donor P in highly enriched S28i using a tuneable single frequency laser to perform photoluminescence excitation spectroscopy. The linewidths fine structure transitions, which were too narrow be resolved previously an available apparatus, are now fully revealed. transition shows complicated additional structure, Zeeman spectroscopy demonstrates result splitting ground state by hyperfine interaction between spin electron that P31 nucleus. nuclear populations can thus determined, hopefully modified, optical means. predominant Auger recombination channel these excitons is used observe same transitions photocurrent spectrum. This donors specific electronic spi...
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