Theory of positron annihilation in the spinon-holon picture

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3 Scopus citations

Abstract

Discussed are the generic predictions of theories based upon the spinon-holon picture. In such theories there is a separation of the charge degrees of freedom associated with the holons and the spin degrees of freedom associated with the spinons. The nature of the spinon ground state, near to halt filling (one physical electron per site) is of key importance. There are two general classes of spinon ground states. One class consists of ground states which cause there to exist a fictitious magnetic flux, either time independent or fluctuating. Within the second class there exists a BCS pair amplitude. While, at half filling, these two types of pairing are equivalent, by virtue of an SU(2) symmetry, for a finite doping, the predictions for the momentum distribution are quite different. These generic issues are illustrated by simple model calculations.

Original languageEnglish (US)
Pages (from-to)1525-1533
Number of pages9
JournalJournal of Physics and Chemistry of Solids
Volume52
Issue number11-12
DOIs
StatePublished - 1991

Keywords

  • High temperature superconductivity
  • holons
  • positron annihilation
  • spinons

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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