### Abstract

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 language | English |
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Title of host publication | The Jahn-Teller Effect |

Editors | A.W. Castleman, Jr., J.P. Toennies, K. Yamanouchi, W. Zinth |

Pages | 727-742 |

Number of pages | 16 |

DOIs | |

Publication status | Published - 2010 Nov 18 |

### Publication series

Name | Springer Series in Chemical Physics |
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Volume | 97 |

ISSN (Print) | 0172-6218 |

### ASJC Scopus subject areas

- Physical and Theoretical Chemistry

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## Cite this

*The Jahn-Teller Effect*(pp. 727-742). (Springer Series in Chemical Physics; Vol. 97). https://doi.org/10.1007/978-3-642-03432-9_22