There isa weak bulk coupling but a strong surface coupling between electrons and phonons for many ionic crystals.
有不少极性半导体，电子与体纵光学声子的耦合弱，但与表面光学声子的耦合强。
There isa weak bulk coupling but a strong surface coupling between electrons and phonons for many ionic crystals.
有不少极性半导体，电子与体纵光学声子的耦合弱，但与表面光学声子的耦合强。
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