Why holes are not like electrons. II. The role of the electron-ion interaction

J. E. Hirsch

doi:10.1103/physrevb.71.104522

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Why holes are not like electrons. II. The role of the electron-ion interaction

J. E. Hirsch

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Abstract

In recent work, we discussed the difference between electrons and holes in energy band in solids from a many-particle point of view, originating in the electron-electron interaction, and argued that it has fundamental consequences for superconductivity. Here we discuss the fact that there is also a fundamental difference between electrons and holes already at the single particle level, arising from the electron-ion interaction. The difference between electrons and holes due to this effect parallels the difference due to electron-electron interactions: {\it holes are more dressed than electrons}. We propose that superconductivity originates in 'undressing' of carriers from $both$ electron-electron and electron-ion interactions, and that both aspects of undressing have observable consequences.

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J. E. Hirsch. 2005-04-01. Why holes are not like electrons. II. The role of the electron-ion interaction. https://doi.org/10.1103/physrevb.71.104522

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