Thermodynamic Potential for an Electron-Phonon System

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概要

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• A thermodynamic potential foe an interacting electron-phonon system is formally expressed as the sum of two thermodynamic potentials; one for a many-particle electron system and the other is for a phonon system. In this paper, a new idea is introduced about the treatment for the interaction constant, which is an essential component. It is shown that we can transform this formal expression into a more practical one based on a procedure used in a previous publication [Prog. Theor. Phys. 88 (1992), 443]. We then are able to obtain general forms for the entropy and heat capacity of the system. The well-known low temperature dependence of the heat capacity of normal metals as an example of an electron-phonon system is also derived to show that their transformation can be easily controlled.

• 1998-04-25

著者

• ONO Masatoshi

  Department of General Education, Health Sciences University of Hokkaido

関連論文

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