Book/Report

FZJ-2018-01573

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Electron phonon interaction in chevrel phase compounds

Pobell, F.FZJ* ; Rainer, D. ; Wühl, H.

1981
Kernforschungsanlage Jülich, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/17529

Report No.: Juel-1710

Abstract: In this chapter, experiments on the electron-phonon interaction in Chevrel-phase compounds (CPC) and a theoretical discussion of their results will be presented. We will particularly discuss measurements of the isotope effect (1-4) and tunneling spectroscopy experiments (5,6). These investigations have been performed to get information about the strength of the electron-phonon interaction in CPC, and about the question whether there are phonon modes which couple particularly strongly to the electrons in these compounds. The effect of the electron-phonon interaction on various physical properties of metals such as the heat capacity, transport properties, phonon damping, or superconducting properties is among the most thoroughly theoretically investigated and best understood fields of solid state physics.A recent review and an extensive list of references can be found in Grimvall's article (7). The main development started when it became clear that an understanding of the superconducting transition temperature needs a quantitatively correct description of electron-phonon effects. Some fortunate circumstances, like the existence of a conveniently small expansion parameter ($\sqrt{m_{el}/M_{ion}}$), allowed a very accurate theory of the effects of the electron-phonon interaction in metals to be developed, with an estimated error in the range of a few percent. This accuracy has been verified, in particular for superconductors where the theory is known as"strong coupling theory of superconductivity". [...]

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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