Frustration effect in strongly correlated electron systems with orbital degree of freedom

Sumio Ishihara

Research output: Chapter in Book/Report/Conference proceedingChapter


In a solid with orbital degree of freedom, an orbital configuration does not minimize simultaneously bond energies in equivalent directions. This is a kind of frustration effect which exists intrinsically in orbital degenerate system. We review in this paper the intrinsic orbital frustration effects in Mott insulating systems. We introduce recent our theoretical studies in three orbital models, i. e. the cubic lattice orbital model, the two-dimensional orbital compass model and the honeycomb lattice orbital model. We show numerical results obtained by the Monte-Carlo simulations in finite size systems, and introduce some non-trivial orbital states due to the orbital frustration effect.

Original languageEnglish
Title of host publicationThe Jahn-Teller Effect
EditorsA.W. Castleman, Jr., J.P. Toennies, K. Yamanouchi, W. Zinth
Number of pages16
Publication statusPublished - 2010

Publication series

NameSpringer Series in Chemical Physics
ISSN (Print)0172-6218

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry


Dive into the research topics of 'Frustration effect in strongly correlated electron systems with orbital degree of freedom'. Together they form a unique fingerprint.

Cite this