2007年9月
The two-orbital Hubbard model and the OSMT
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
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- 巻
- 460
- 号
- 開始ページ
- 1068
- 終了ページ
- 1069
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.physc.2007.03.218
- 出版者・発行元
- ELSEVIER SCIENCE BV
We analyze the two-orbital Hubbard model by means of the composite operator method with the aim at studying the phenomenon of orbital selective Mott transition (OSMT). The model contains an interorbital interaction LP, in addition to the usual intraorbital one U. As warming-up approximation, we use a basis of two operators only, the Hubbard operators. The analysis of the density of states at the chemical potential as a function of the ratio between the bandwidths of the two orbitals shows the clear signature of an orbital selective Mott transition as expected. (c) 2007 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.physc.2007.03.218
- ISSN : 0921-4534
- Web of Science ID : WOS:000249870600165