Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
University of Chinese Academy of Sciences, Beijing, 100049, China.
Angew Chem Int Ed Engl. 2018 Jan 2;57(1):146-150. doi: 10.1002/anie.201707568. Epub 2017 Dec 5.
A highly crystalline copper(II) benzenehexathiolate coordination polymer (Cu-BHT) has been prepared. The two-dimensional kagome structure has been confirmed by powder X-ray diffraction, high-resolution transmission electron microscopy, and high-resolution scanning transmission electron microscopy. The as-prepared sample exhibits bulk superconductivity at about 0.25 K, which is confirmed by the zero resistivity, AC magnetic susceptibility, and specific heat measurements. Another diamagnetic transition at about 3 K suggests that there is a second superconducting phase that may be associated with a single layer or few layers of Cu-BHT. It is the first time that superconductivity has been observed in a coordination polymer.
一种高结晶度的铜（II）苯六硫配合物配位聚合物（Cu-BHT）已经被制备出来。二维 kagome 结构已经通过粉末 X 射线衍射、高分辨率透射电子显微镜和高分辨率扫描透射电子显微镜得到证实。所制备的样品在约 0.25 K 时表现出体超导性，这通过零电阻、交流磁化率和比热测量得到了证实。在约 3 K 时的另一个抗磁性转变表明可能存在第二个超导相，该相可能与 Cu-BHT 的单层或少数层有关。这是首次在配位聚合物中观察到超导性。
