Observation of superconductivity in 1T′-MoS2 nanosheets

被引：91

作者：

Guo, Chenguang ^{[1
,2
,3
]}

Pan, Jie ^{[1
,2
,3
]}

Li, Hui ^{[4
]}

Lin, Tianquan ^{[1
,3
]}

Liu, Pan ^{[4
]}

Song, Changsheng ^{[1
]}

Wang, Dong ^{[1
]}

Mu, Gang

Lai, Xiaofang ^{[3
]}

Zhang, Hui ^{[5
]}

Zhou, Wei ^{[4
]}

Chen, Mingwei ^{[4
,6
]}

Huang, Fuqiang ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China

[4] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200030, Peoples R China

[5] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China

[6] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2017年 / 5卷 / 41期

关键词：

HYDROGEN EVOLUTION; MOS2; NANOSHEETS; TRANSITION; CATALYSIS; 1T;

D O I：

10.1039/c7tc03749j

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Studies on the preparation and physical properties of phase-pure 1T'-MoS2 are still scarce although a 1T' phase MX2 (M = Mo and W; X = Se and Te) has recently been reported to be a Weyl semimetal, a quantum spin Hall insulator, and a superconductor. Herein, we report a perfect single-layer 1T'-MoS2 structure based on edge-sharing octahedra. Pure 1T'-MoS2 nanosheets were successfully prepared using LiMoS2 single crystals. The arrangement of zig-zag Mo-Mo chains in the 1T'-MoS2 layer evolved from that of parent Mo-Mo diamond-like chains in LiMoS2 crystals after the removal of all lithium ions. A well-defined 1T'-type lattice structure was observed and characterized by scanning transmission electron microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. Surprisingly, superconductivity with an onset transition temperature (T-c) of 4.6 K has been observed in the lithium-free 1T'-MoS2 nanosheets, which is not observed in semiconducting bulk or single-layer 2H-MoS2.

引用

页码：10855 / 10860

页数：6

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