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Pressure-induced permanent metallization with reversible structural transition in molybdenum disulfide TEXT SIZE: A A A
This report presents a pressure-induced permanent metallization for MoS2 under non-hydrostatic conditions. Impedance and Raman spectra were measured to study the pressure-induced structural and electronic transformations of MoS2 at up to similar to 25 GPa in diamond anvil cells under both non-hydrostatic and hydrostatic conditions. The results show evidence for isostructural hexagonal distortion from 2Hc to 2Ha and metallization at similar to 17 GPa and similar to 20 GPa under non-hydrostatic and hydrostatic conditions, respectively. Interestingly, the metallization is irreversible only under non-hydrostatic compression. We attribute this phenomenon to the incorporation of molecules of pressure medium between layers, which mitigate compressed stress and reduce interlayer interaction. Published by AIP Publishing.
 

Publication name

 APPLIED PHYSICS LETTERS, 110 (12):10.1063/1.4979143 MAR 20 2017

Author(s)

 Zhuang, YuKai; Dai, LiDong; Wu, Lei; Li, HePing; Hu, HaiYing; Liu, KaiXiang; Yang, LinFei; Pu, Chang

Corresponding author(s) 

 DAI Lidong
 dailidong_2014@hotmail.com
 Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths In, Guiyang 550081, Guizhou, Peoples R China. 

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