Abstract

A theoretical study of the cyclotron resonance lineshape, under strong quantizing condition, arising from the electron-acoustic-phonon interaction is presented, starting from Kubo's formula and employing the proper connected diagram expansion. The calculated lineshapes at temperatures (130–300 K) have the following features: (a) the lineshape is slightly asymmetric, (b) the width depends little on temperature, (c) the width grows quasi-linearly with the resonaance field, and (d) the peak value of the absorption is inversely proportional to the field. These features are in qualitative agreement with the recent experiments by Miura et al.

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