Highly conducting 1:1 radical cation salts: (DMTSA)X with X = NO3 and BF4

Kazushige Kawabata, Motoki Yanai, Takashi Sambongi, Yoshio Aso, Kazuo Takimiya, Tetsuo Otsubo

研究成果: Article査読

11 被引用数 (Scopus)

抄録

(DMTSA)NO3 and -BF4 show high conductivity at room temperature, in spite of fully ionic salt of 1:1 stoichiometry with uniform segregated stack column structure. DMTSA denotes 2,3-dimethyltetraseleno-anthracene. The NO3 salt is semiconducting below room temperature, and the BF4 salt is metallic above 220 K and semiconducting at lower temperatures. We found that their magnetic susceptibility is paramagnetic and independent of temperature from 300 K down to 10 K in common. The obtained magnetic property can not be attributed to conduction electrons but discussed in terms of Mott insulating state. Furthermore, high pressure experiment reveals that the NO3 salt is not semiconducting but rather semi-metallic, and more that the BF4 salt shows a small conductive anomaly around 70 K and maintains metallic at low temperatures under the pressure of 0.5 GPa.

本文言語English
ページ(範囲)197-204
ページ数8
ジャーナルMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
296
DOI
出版ステータスPublished - 1997
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学

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