Ambient-pressure molecular superconductor with a superlattice containing layers of tris(oxalato)rhodate enantiomers and 18-crown-6

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• 作者：Lee MartinAlexander L. Morritt ; Jordan R. LopezHiroki Akutsu ; Yasuhiro Nakazawa ; Shusaku ImajoYoshihiko Ihara
• 刊名：Inorganic Chemistry
• 出版年：2017
• 出版时间：January 17, 2017
• 年：2017
• 卷：56
• 期：2
• 页码：717-720
• 全文大小：359K
• ISSN：1520-510X

文摘

We report a novel multilayered organic–inorganic hybrid material, β″-(BEDT-TTF)₂[(H₂O)(NH₄)₂Rh(C₂O₄)₃]·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_c of 2.7 K at ambient pressure was found by transport measurements and 2.5 K by magnetic susceptibility measurements.