Metal–Insulator Transition in the Two-Orbital Hubbard Model at Fractional Band Fillings: Self-Energy Functional Approach
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- Inaba Kensuke
- Department of Applied Physics, Osaka University
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- Koga Akihisa
- Department of Physics, Kyoto University
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We investigate the infinite-dimensional two-orbital Hubbard model at arbitrary band fillings. By means of the self-energy functional approach, we discuss the stability of the metallic state in the systems with same and different bandwidths. It is found that the Mott insulating phases are realized at commensurate band fillings. Furthermore, it is clarified that the orbital selective Mott phase with one orbital localized and the other itinerant is stabilized even at fractional band fillings in the system with different bandwidths.
収録刊行物
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- Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ
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Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ 76 (9), 094712-094712, 2007
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390282679175110400
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- NII論文ID
- 130005297115
- 110006418615
- 210000106890
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- NII書誌ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 8907713
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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- KAKEN
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