Realization of Superconductivity at Ambient Pressure by Band-Filling Control in κ- (BEDT-TTF)2Cu2(CN)3
作者： Tokutaro Komatsu , Nozomu Matsukawa , Takeharu Inoue , Gunzi Saito , None
DOI: 10.1143/JPSJ.65.1340
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摘要: The resistivity, thermoelectric power (TEP), ESR and static susceptibility were measured on κ- κ'- (BEDT-TTF) 2 Cu (CN) 3 ; also, a band calculation based an extended Huckel method was re-examined the results compared with those of related BEDT-TTF (ET) salts. Although crystal- calculated structures these salts are identical within experimental error, former is semiconductor; contrary, latter metal at ambient pressure (AP). spin (χ ) measurement suggest that salt Mott-insulator exactly half-filled band. shows only signal ET cation radicals, κ'-salt additional 2+ below about 20 K. content 88–1200 ppm total copper atoms. It found metallic state superconductivity AP realized by band-filling control substituting + .
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