Spectroscopy of a Single Si Donor by the Resonant Tunnelling Experiment
Acta Physica Polonica A(2006)
摘要
Resonant tunnelling via single impurities placed in a single barrier was experimentally studied. The typically observed structures in the current-voltage characteristics seem to be paired. Such a pair can be interpreted as ground and excited states of an impurity, related to X-xy and X-z valleys, which is in agreement with the results obtained for big mesas. However, it is not clear why X-xy states can be seen without any phonon participation.
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关键词
excited states
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