Impurity Effects on Strain-Confined Electron-Hole Liquid in Germanium II. : Millimeter-Wave Studies on Transport Phenomena

概要

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From millimeter-wave dimensional resonance experiments, double acceptors, Beand Zn, are found to remarkably increase carrier scattering within strain-confinedelectron-hole liquid in Ge. Scattering rate of Be impurity is 4.2 X 10 ' cm's ' bothfor electrons and for holes, while that of Zn imj>urity is l.0X 10 ' cm's ' for elec-irons and 2.3 X 10 'cm's ' for holes at 1.6K. Tltese values are larger than the ratefor the single acceptor, In,4.9 XIO 'cm's '. SUCII a result is interpreted by the Moltcriterion in accordance with recombination result obtained by photoluminescencemeasurements. Temperature dependence of Be-induced scattering rate yields log Tbehavior. One possible explanation would be a kind of Kondo effect due to theatomic motion of Be impurity.
社団法人日本物理学会の論文
1987-12-15