Incommensurate Mott Insulator in One-Dimensional Electron Systems Close to Quarter Filling(Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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The possibility of metal-insulator transition in molecular conductors has been studied for systems composed of donor molecules and fully ionized anions with an incommensurate ratio close to 2:1 based on the one-dimensional extended Hubbard model, where donor carriers are slightly deviated from quarter filling and under an incommensurate periodic potential from anions. By the renormalization group method, the interplay between commensurability energy on the donor lattice and that from the anion potential has been studied and it has been found that an "incommensurate Mott insulator" can be generated. This theoretical finding will qualitatively explain the appearance of the insulating state in a two-dimensional material with an incommensurate filling, (MDT-TS)(AuI_2)_<0.441>.
- 社団法人日本物理学会の論文
- 2005-07-15
著者
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Seo Hitoshi
Non-equilibrium Dynamics Project Erato-jst Co Kek
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Seo Hitoshi
Non-equilibrium Dynamics Project Erato-jst C
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Yoshioka Hideo
Department of Physics, Nagoya University
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Yoshioka H
Department Of Materials Science And Engineering Kyoto Universit
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Yoshioka H
Nara Women's Univ. Nara
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Yoshioka Hideo
Department Of Physics Faculty Of Science University Of Tokyo
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FUKUYAMA Hidetoshi
o KEK
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Fukuyama Hidetoshi
Department Of Chemistry Graduate School Of Science Osaka Prefecture University
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Yoshioka Hideo
Department Of Oral And Maxillofacial Surgery Osaka Rosai Hospital
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