Thermal Conductivity of Molecular Crystal with Various Types of Chemical Bonding: Quasi-One-Dimensional Organic Superconductor (DMET)2AuI2
Thermal Conductivity of Molecular Crystal with Various Types of Chemical Bonding: Quasi-One-Dimensional Organic Superconductor (DMET)2AuI2
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DOI：
10.7566/jpsj.84.054601
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发表时间：
2015-05-15
影响因子：
1.7
通讯作者：
Murata, Keizo
中科院分区：
文献类型：
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作者：
Iwasaki, Yoshiki;Yoshino, Harukazu;Murata, Keizo
（DMET）（2）AUI2（DMET =二甲基二硫代硫硫代乙烯）的热导率（kappa）首次在10到300K之间，作为基于dmet Molecule的准二维有机导体。该材料与第一个有机超导体（TMTSF）（2）PF6（TMTSF =四甲基四甲基乙烯素）非常相似； DMET盐在环境压力下以16K的旋转密度波过渡，但在0.5 GPa以上的0.5k以下时会进行超导。发现那是。 （DMET）（2）AUI2在25和70 K处的异常以及高于200 k的异常上升。这表明温度依赖性。低于200 K可以通过结合Debye型晶格导热率和电子导热率的两个术语来进行现象学复制。
The thermal conductivity (kappa) of (DMET)(2)AuI2 (DMET = dimethyl(ethylenedithio)diselenadithiafulvalene) was measured between 10 and 300K for the first time as a quasi-one-dimensional organic conductor based on the DMET molecule. The material is very similar to the first organic superconductor (TMTSF)(2)PF6 (TMTSF = tetramethyl-tetraselenafulvalene); the DMET salt undergoes the spin-density-wave transition at 16K at ambient pressure, but becomes superconducting below 0.5K above 0.5 GPa. It was found that. of (DMET)(2)AuI2 has anomalies at 25 and 70 K as well as the unusual upturn above 200 K. It is shown that the temperature dependence of. below 200 K can be phenomenologically reproduced by combining two terms of the Debye type lattice thermal conductivity and the electronic thermal conductivity.