Temperature Dependence of the Cyclotron Mass in n-Type CdS
Abstract
Recent cyclotron resonance experiments in n-type CdS at ultra-high magnetic fields have revealed a pronounced maximum of the electron cyclotron mass as a function of temperature. In order to interpret these data, we calculate the magneto-absorption spectra of polarons in n-CdS using the arbitrary-coupling approach. We show that in high magnetic fields the polaron effects beyond the weak-coupling approximation clearly reveal themselves in the magneto-optical absorption even at relatively small values of the Froehlich coupling constant. In particular, those effects result in a non-monotonous behaviour of the cyclotron mass as a function of temperature. We extend the theory to take into account a combined effect of several scattering mechanisms on the magneto-absorption spectra. The extended theory allows us to interpret quantitatively the experimentally observed behaviour of the cyclotron mass in CdS.
Cite
@article{arxiv.cond-mat/0107481,
title = {Temperature Dependence of the Cyclotron Mass in n-Type CdS},
author = {J. T. Devreese and V. M. Fomin and V. N. Gladilin and Y. Imanaka and N. Miura},
journal= {arXiv preprint arXiv:cond-mat/0107481},
year = {2009}
}
Comments
4 pages, 3 figures, E-mail addresses: [email protected], [email protected]