| Literature DB >> 30739447 |
Bin-Bin Ruan1,2, Kang Zhao1,2, Qing-Ge Mu1,2, Bo-Jin Pan1,2, Tong Liu1,2, Huai-Xin Yang1,2,3,4, Jian-Qi Li1,2,3,4, Gen-Fu Chen1,2,3,4, Zhi-An Ren1,2,3,4.
Abstract
A quaternary compound Bi3O2S2Cl, which consists of novel [BiS2Cl]2- layers, is reported. It adopts a layered structure of the space group I4/ mmm (No. 139) with lattice parameters: a = 3.927(1) Å, c = 21.720(5) Å. In this compound, bismuth and chlorine atoms form an infinite planar layer, which is unique among the bismuth halides. Superconductivity is observed in both polycrystals and single crystals, and is significantly enhanced in the samples prepared with less sulfur or at higher temperatures. By tuning the content of sulfur, Bi3O2S2Cl can be converted from a semiconductor into a superconductor. The superconducting critical temperature ranges from 2.6 to 3.5 K. Our discovery of the [BiS2Cl]2- layer opens another door in searching for the bismuth compounds with novel physical properties.Entities:
Year: 2019 PMID： 30739447 DOI： 10.1021/jacs.8b13796
Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419