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30 September 2020
  » arxiv » cond-mat/0504013

 Article overview

Why holes are not like electrons. II. The role of the electron-ion interaction
J. E. Hirsch ;
Date 1 Apr 2005
Journal Phys.Rev. B71, 104522 (2005)
Subject Superconductivity; Strongly Correlated Electrons | cond-mat.supr-con cond-mat.str-el
AbstractIn 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.
Source arXiv, cond-mat/0504013
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