GaAs中与施主高激发态有关的共振极化子效应

RESONANT POLARON EFFECT RELATED WITH HIGH EXCITED STATES OF DONORS IN GaAs

报道了ｎ型ＧａＡｓ的杂质磁光电导谱．在相对低的磁场下观察到束缚电子高激发态与ＬＯ声子的共振相互作用；讨论了共振极化子光电导响应随磁场强度变化的行为。

Photoconductivity (PC) spectra of impurities in n type GaAs under magnetic field are presented. The resonant interaction between high excited states of bound electrons and LO phonons under relatively low magnetic field was observed. The magnetic field dependency of PC response of resonant polaron and the physical origin of the PC peak stuck on the energy position of LO phonon are discussed.