Dilution effects in classical and quantum orbital systems

T. Tanaka, M. Matsumoto, S. Ishihara

Research output: Contribution to journalArticlepeer-review


We examine the dilution effects in an orbital model, termed the orbital compass model, which corresponds to the two-dimensional version of the eg-orbital model. An unconventional low-dimensional orbital alignment termed the directional order is confirmed to be realized by utilizing the quantum Monte-Carlo method. Impurity dependence of the ordering temperature of the directional order is numerically examined. We show that the quantum effect makes the directional order robust against doping of impurities.

Original languageEnglish
Pages (from-to)804-806
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Issue number2 SUPPL. PART 1
Publication statusPublished - 2007 Mar


  • Dilution effect
  • Orbital order
  • Quantum Monte-Carlo simulation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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