Superconductivity in the Vicinity of Charge Ordered State in Organic Conductor β-(meso-DMBEDT-TTF)_2 PF_6(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
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概要
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We study theoretically competition between the charge ordering and the superconductivity in the two-dimensional organic conductor β-(meso-DMBEDT-TTF)_2PF_6. We analyze the extended Hubbard model on a weakly-dimerized lattice based on the random phase approximation and Eliashberg equations. We found the reentrant behavior of the checkerbord-type charge-ordered phase in the phase diagram, and the triplet superconductivity due to the charge fluctuation in the neighboring region. In low temperatures, the singlet superconductivity also appears due to the enhancement of the spin fluctuation.
- 社団法人日本物理学会の論文
- 2007-02-15
著者
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NAKAMURA Masaaki
Department of Biomaterials, Osaka Dental University
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Mori Hatsumi
Institute For Solid State Physics The University Of Tokyo
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Yoshimi Kazuyoshi
Institute For Solid State Physics University Of Tokyo
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Yoshimi Kazuyoshi
Institute For Solid State Physics The University Of Tokyo
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Mori Hatsumi
Univ. Tokyo Chiba
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Nakamura Masaaki
Department Of Applied Physics Faculty Of Science Tokyo University Of Science
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