Electron correlation and dynamical Jahn-Teller effect in an orbitally degenerate system

Joji Nasu, Sumio Ishihara

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Motivated by recent experiments on Ba3CuSb2O9, we study the dynamical Jahn-Teller effect in a spin-orbital coupled system. We analyze a low-energy model Hamiltonian which includes the superexchange-type interaction and the Jahn-Teller interaction by using a combined method of the mean-field approximation and the quantum Monte-Carlo simulation. We find that magnetic orders do not appear in a wide parameter region and that the spin-dimer state with an orbital order is realized. The orbital order is strongly suppressed by the dynamical Jahn-Teller effect.

Original languageEnglish
Pages (from-to)2179-2183
Number of pages5
JournalJournal of the Korean Physical Society
Volume62
Issue number12
DOIs
Publication statusPublished - 2013 Jul
Externally publishedYes

Keywords

  • Dynamical Jahn-Teller effect
  • Jahn-Teller effect
  • Orbital degree of freedom
  • Spin liquid

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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