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: Article査読

44 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English
論文番号217003
ジャーナルPhysical review letters
104
21
DOI
出版ステータスPublished - 2010 5月 27

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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