The excitation spectrum of the orbitally degenerate Hubbard model in one dimension: Absence of Cooper pairing

Kong Ju Bock Lee, P. Schlottmann

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The degenerate Hubbard chain with N internal degrees of freedom is integrable if site occupations of more than two electrons are excluded. If on average there is exactly one electron per site, the system is a Mott-Hubbard insulator. The authors discuss the elemental charge and spin excitations, the effects of crystalline fields quenching the orbital degrees of freedom, and the implications of hole states for superconductivity.

Original languageEnglish
Article number020
Pages (from-to)10193-10199
Number of pages7
JournalJournal of Physics Condensed Matter
Volume1
Issue number50
DOIs
StatePublished - 1989

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