Original scientific paper
Theoretical study of the thermoelectric power in ultrathin films of A113BV3 semiconductors in the presence of a quantizing magnetic field
Kamakhya Prasad Ghatak
; Department of Electronics and Telecommunication Engineering, Faculty of Engineering & Technology, University of Jadavpur, Calcutta-700032, India
Ardhendu Ghoshal
; Department of Electronics and Telecommunication Engineering, Faculty of Engineering & Technology, University of Jadavpur, Calcutta-700032, India
Bhaswati Mitra
; Department of Electronics and Telecommunication Engineering, Faculty of Engineering & Technology, University of Jadavpur, Calcutta-700032, India
Abstract
An attempt is made to study theoretically the thermoelectric power in ultrathin films A113BV3 semiconductors in the presence of a quantizing magnetic field by formulating a new magneto dispersion law, within the framework of k · p formalism incorporating the anisotropies in the band parameters. It is found, taking ultrathin films of n-Cd3P2 as an example, that the same power decreases with increasing surface electron concentration and also changes in an oscillatory manner with film thickness and quantizing magnetic field, respectively. In addition, the wellknown results for parabolic energy bands in the absence of any quantization have been also obtained from our expressions as special cases.
Keywords
Hrčak ID:
331701
URI
Publication date:
6.8.1989.
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