| Why holes are not like electrons. II. The role of the electron-ion interaction (2005) | |||||||||
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.. Comment: Continuation of Phys.Rev.B65, 184502 (2002) = cond-mat/0109385 (2001) | |||||||||
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