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Bloch electrons in a Jahn-Teller crystal and an orbital-density-wave state due to the Berry phase | | H. Koizumi
; T. Hotta
; Y. Takada
; | | Date: |
12 Dec 1997 | | Subject: | cond-mat | | Affiliation: | Himeji Institute of Technology), T. Hotta and Y. Takada (ISSP, Univ. of Tokyo | | Abstract: | The effect of the Berry phase is included explicitly in the wavefunction describing conduction electrons in a crystal composed of periodically arrayed Jahn-Teller centers that have conically intersecting potential energy surfaces. The Berry phase can make a drastic change in the band structure, leading generally to the formation of an orbital-density-wave state. We discuss implications of our theory and possible relations to the orbital ordering observed in the manganese perovskites. | | Source: | arXiv, cond-mat/9801093 | | Services: | Forum | Review | PDF | Favorites | |
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