Low Frequency Lattice Vibration in Semiconductors as Induced by Defects, Impurities and Crystalline-Mixing
We report and summarize the results for the low frequency lattice vibration in semiconductors as induced by impurities, defects and crystalline-mixing which have been obtained in this laboratory and in the last few years. The defect and disorder activated transverse acoustic mode (DATA), the acoustic local mode, and the gap mode in some cases were observed, discovered and discussed.