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Temperature Dependence of the Cyclotron Mass in n-Type CdS | J. T. Devreese
; V. M. Fomin
; V. N. Gladilin
; Y. Imanaka
; N. Miura
; | Date: |
23 Jul 2001 | Journal: | Physica B 298 (2001) 207-210 | Subject: | Statistical Mechanics | cond-mat.stat-mech | Affiliation: | Universiteit Antwerpen - UIA, National Research Institute for Metals, Tsukuba, University of Tokyo | 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. | Source: | arXiv, cond-mat/0107481 | Services: | Forum | Review | PDF | Favorites |
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