Pressure-induced metallization in MoSe2 under different pressure conditions | |
Linfei Yang; Lidong Dai; Heping Li; Haiying Hu; Kaixiang Liu; Chang Pu; Meiling Hong; Pengfei Liu | |
刊名 | RSC Advances |
2019 | |
卷号 | 9期号:10页码:5794–5803 |
英文摘要 | In this study, the vibrational and electrical transport properties of molybdenum diselenide were investigated under both non-hydrostatic and hydrostatic conditions up to 40.2 GPa using the diamond anvil cell in conjunction with Raman spectroscopy, electrical conductivity, high-resolution transmission electron microscopy, atomic force microscopy, and first-principles theoretical calculations. The results obtained indicated that the semiconductor-to-metal electronic phase transition of MoSe2 can be extrapolated by some characteristic parameters including abrupt changes in the full width at half maximum of Raman modes, electrical conductivity and calculated bandgap. Under the non-hydrostatic condition, metallization occurred at 26.1 GPa and it was irreversible. However, reversible metallization occurred at 29.4 GPa under the hydrostatic condition. In addition, the pressure-induced metallization reversibility of MoSe2 can be revealed by high-resolution transmission electron and atomic force microscopy of the recovered samples under different hydrostatic conditions. This discrepancy in the metallization phenomenon of MoSe2 in different hydrostatic environments was attributed to the mitigated interlayer van der Waals coupling and shear stress caused by the insertion of pressure medium into the layers. |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.gyig.ac.cn/handle/42920512-1/10554] |
专题 | 地球化学研究所_地球内部物质高温高压实验室 |
作者单位 | 1.State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guizhou 550081, China |
推荐引用方式 GB/T 7714 | Linfei Yang;Lidong Dai;Heping Li; Haiying Hu; Kaixiang Liu;Chang Pu;Meiling Hong;Pengfei Liu. Pressure-induced metallization in MoSe2 under different pressure conditions[J]. RSC Advances,2019,9(10):5794–5803. |
APA | Linfei Yang;Lidong Dai;Heping Li; Haiying Hu; Kaixiang Liu;Chang Pu;Meiling Hong;Pengfei Liu.(2019).Pressure-induced metallization in MoSe2 under different pressure conditions.RSC Advances,9(10),5794–5803. |
MLA | Linfei Yang;Lidong Dai;Heping Li; Haiying Hu; Kaixiang Liu;Chang Pu;Meiling Hong;Pengfei Liu."Pressure-induced metallization in MoSe2 under different pressure conditions".RSC Advances 9.10(2019):5794–5803. |
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