Superconductivity in the Electron-Doped Chevrel Phase Compound Mo6S6.8Te1.2

Feng Lin; Yuqiang Fang; Xiangli Che; Shaoning Zhang; Fuqiang Huang

doi:10.1021/acs.inorgchem.0c00017

Superconductivity in the Electron-Doped Chevrel Phase Compound Mo₆S_6.8Te_1.2

Inorg Chem. 2020 May 18;59(10):6785-6789. doi: 10.1021/acs.inorgchem.0c00017. Epub 2020 May 5.

Authors

Feng Lin^{1

2}, Yuqiang Fang^{1

2}, Xiangli Che^{1

3}, Shaoning Zhang^{1

2}, Fuqiang Huang^{1

4

3}

Affiliations

¹ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China.
² Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
³ CAS Center for Excellence in Superconducting Electronic (CENSE), Shanghai 200050, People's Republic of China.
⁴ State Key Laboratory of Rare Earth Materials Chemistry and Applications, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.

PMID: 32369350
DOI: 10.1021/acs.inorgchem.0c00017

Abstract

Chevrel-phase superconducting compounds A_yMo₆Q₈ (A = Pb, Mg, etc. and Q = S, Se, Te) have attracted much attention due to their ultrahigh upper critical magnetic fields (H_c2). However, the binary compounds Mo₆S₈ and Mo₆Te₈ show no superconducting properties above 2 K. In this work, the new Chevrel-phase pseudobinary compound Mo₆S_6.8Te_1.2 with a superconducting transition temperature (T_c) of 3.6 K was successfully synthesized by a two-step process. A detailed investigation implies that the superconductivity in Mo₆S_6.8Te_1.2 may derive from the increased electronic density near the Fermi level in comparison to Mo₆S₈. Our work provides a feasible scheme to search for new superconducting compounds.