Electron localization near the Mott transition in the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br

K. Sano, T. Sasaki, N. Yoneyama, N. Kobayashi

研究成果: ジャーナルへの寄稿学術論文査読

47 被引用数 (Scopus)

抄録

The effect of disorder on the electronic properties near the Mott transition is studied in an organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2] Br, which is systematically irradiated by x rays. We observe that x ray irradiation causes Anderson-type electron localization due to molecular disorder. The resistivity at low temperatures demonstrates variable range hopping conduction with Coulomb interaction. The experimental results show clearly that the electron localization by disorder is enhanced by the Coulomb interaction near the Mott transition.

本文言語英語
論文番号217003
ジャーナルPhysical Review Letters
104
21
DOI
出版ステータス出版済み - 2010 5月 27

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