Antiferromagnetic phase in β'-(BEDT-TTF)2ICl2 under pressure as seen via 13C NMR
Antiferromagnetic phase in β'-(BEDT-TTF)2ICl2 under pressure as seen via 13C NMR
复制标题
通过 13C NMR 观察到加压下 β-(BEDT-TTF)2ICl2 中的反铁磁相
DOI：
10.1103/physrevb.81.020512
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
A. Kawamoto
中科院分区：
文献类型：
--
作者：
Yoshihiro Eto;A. Kawamoto
对于非常规超导体，包括高T_c超导体，可以用两种相互矛盾的描述来说明电子结构。一种起源于Mott绝缘体，解释了现场库仑相互作用U的强极限，而另一种是将电子关联引入具有大转移能t的巡回电子系统。在有机超导体中，BEDT-TTF2X超导体，其中BEDT-TTF是双乙烯二硫-四硫富瓦烯，X是一价反阴离子，已经被深入研究。BEDT-TTF与无机离子结合形成具有不同晶体结构的二维导电片。其中，以-BEDT-TTF2X为代表的盐被用来评估上述两种相互矛盾的描述所提供的反铁磁性和超导电性之间的关系。1-3
For unconventional superconductors, including high-Tc superconductors, two conflicting descriptions can be used to illustrate the electronic structure. One originates from a Mott insulator, explaining the strong limit of the onsite Coulomb interaction U, whereas the other incorporates the electronic correlation into the itinerant electron system, which has a large transfer energy t. Among the organic superconductors, BEDT-TTF2X superconductors, where BEDT-TTF is bisethylenedithio-tetrathiafulvalene and X is a monovalent counter anion, have been thoroughly investigated. The combination of BEDT-TTF and inorganic ions forms twodimensional conducting sheets with various crystal structures. Of these, the salts typified by -BEDT-TTF2X have been used to assess the relationship between antiferromagnetism and superconductivity provided by the two conflicting descriptions mentioned above. 1‐3