Pressure-induced superconductivity in (MDT-TS)(AuI2)0.441 [MDT- TS = 5H-2-(1,3-diselenol-2-ylidene)-1,3,4,6-tetrathiapentalene]: A new organic superconductor possessing an incommensurate anion lattice
Pressure-induced superconductivity in (MDT-TS)(AuI2)0.441 [MDT- TS = 5H-2-(1,3-diselenol-2-ylidene)-1,3,4,6-tetrathiapentalene]: A new organic superconductor possessing an incommensurate anion lattice
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DOI：
10.1021/cm049144t
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发表时间：
2004-10
影响因子：
8.6
通讯作者：
K. Takimiya;M. Kodani;Naoto Niihara;Y. Aso;T. Otsubo;Y. Bando;T. Kawamoto;Takehiko Mori
中科院分区：
文献类型：
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作者：
K. Takimiya;M. Kodani;Naoto Niihara;Y. Aso;T. Otsubo;Y. Bando;T. Kawamoto;Takehiko Mori
采用两步法合成了含硒ttf型电子给体MDT-TS [5H-2-（1,3-二烯醇-2-基二烯）-1,3,4,6-四噻吩二烯]，并将其用于与AuI -2阴离子的电结晶。所得盐（MDT-TS）（AuI 2） 0.441具有独特的晶体填充，其中供体亚细胞和阴离子晶格不相称。虽然盐在室温下具有较高的电导率（600 S cm -1），但在T MI = 50 K时表现出金属-绝缘体（MI）转变。在11.4 kbar (MDT-TS)(AuI 2) 0.441温度下，温度c = 4.7 K时超导跃迁发生。
A selenium-containing TTF-type electron donor, MDT-TS [5H-2-(1,3-diselenol-2-ylidene)-1,3,4,6-tetrathiapentalene] was effectively synthesized by a two-step reaction and utilized for electrocrystallization with an AuI 2 - anion. The resulting salt, (MDT-TS)(AuI 2 ) 0.441 , has a unique crystal packing, in which the donor subcell and the anion lattice are incommensurate. Although the salt has relatively high conductivity at room temperature (600 S cm -1 ), it showed a metal-insulator (MI) transition at T MI = 50 K. Application of hydrostatic pressure suppressed the MI transition, and at 11.4 kbar (MDT-TS)(AuI 2 ) 0.441 showed a superconducting transition at T c = 4.7 K.