FIZIKA A 3 (1994) 1, 7-24

INFLUENCE OF QUANTUM CONFINEMENT ON THE HEAT CAPACITY OF GRAPHITE

KAMAKHYA P. GHATAK and SAMBHU N. BISWAS
Department of Electronic Science, University of Calcutta, 92 Acharya Prafulla Chandra Road, University College of Science and Technology, Calcutta-700009, India
and
Department of Electronics and Telecommunication Engineering, Bengal Engineering College, Shibpur, Howrah - 711103, West Bengal, India

Received 15 March 1993

In this paper an attempt is made to investigate theoretically the heat capacity in graphite having quantum confinement in one, two and three dimensions such as quantum wells, quantum wires, quantum dots and magneto-sized quantization of band states. The appropriate density of states functions are deduced, taking into account various types of anisotropies of the energy band constants. It has been found that the heat capacity oscillates with the film thickness, magnetic film and doping in various manners. The heat capacity is largest in quantum dots and smallest in quantum wells. The theoretical analysis is in agreement with the experimental results.

UDC 538.95
PACS 65.40.Em

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