Martin Lee, Morritt Alexander L, Lopez Jordan R, Akutsu Hiroki, Nakazawa Yasuhiro, Imajo Shusaku, Ihara Yoshihiko
School of Science and Technology, Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS, U.K.
Department of Chemistry, Graduate School of Science, Osaka University , 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan.
Inorg Chem. 2017 Jan 17;56(2):717-720. doi: 10.1021/acs.inorgchem.6b02708. Epub 2017 Jan 5.
We report a novel multilayered organic-inorganic hybrid material, β″-(BEDT-TTF)[(HO)(NH)Rh(CO)]·18-crown-6. This is the first molecular superconductor to have a superlattice with layers of both BEDT-TTF and 18-crown-6 and also the first with the anion tris(oxalato)rhodate. This is the 2D superconductor with the widest gap between conducting layers, where only a single donor packing motif is observed (β″). The strong 2D nature of this system strongly suggests that the superconducting transition is a Kosterlitz-Thouless transition. A superconducting T of 2.7 K at ambient pressure was found by transport measurements and 2.5 K by magnetic susceptibility measurements.
我们报道了一种新型的多层有机-无机杂化材料，β″-(BEDT-TTF)[(HO)(NH)Rh(CO)]·18-冠-6。这是首个具有由BEDT-TTF层和18-冠-6层构成的超晶格的分子超导体，也是首个含有三（草酸根）铑酸根阴离子的分子超导体。这是具有导电层间最宽能隙的二维超导体，其中仅观察到单一的给体堆积模式（β″）。该体系强烈的二维特性有力地表明超导转变是一种科斯特利茨-索利斯转变。通过输运测量发现，在环境压力下该材料的超导转变温度为2.7 K，通过磁化率测量得到的结果为2.5 K。
