Orbital ordering in a two-dimensional triangular lattice

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • H. F. Pen - , University of Groningen (Autor:in)
  • J. Van den Brink - , University of Groningen (Autor:in)
  • D. I. Khomskii - , University of Groningen (Autor:in)
  • G. A. Sawatzky - , University of Groningen (Autor:in)

Abstract

We discuss the role of orbital ordering in a two-dimensional triangular lattice. Usually, this lattice is considered as “frustrated.” We show that a peculiar type of orbital ordering can remove this frustration if we allow for orbital degeneracy. We pay special attention to the d2 case, for which we present mean field calculations for possible orbital orderings and an exact diagonalization study of a three-site cluster within a degenerate Hubbard model. The results support the possibility of an orbitally ordered singlet ground state. In particular, it provides new insight to the magnetic phase transition and the low temperature phase ofLiVO2.

Details

OriginalspracheEnglisch
Seiten (von - bis)1323-1326
Seitenumfang4
FachzeitschriftPhysical review letters
Jahrgang78
Ausgabenummer7
PublikationsstatusVeröffentlicht - 17 Feb. 1997
Peer-Review-StatusJa
Extern publiziertJa

Schlagworte

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