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Structural phase transition and superconductivity hierarchy in 1T-TaS2 under pressure up to 100 GPa

文献类型：期刊论文

作者Dong, Qing2; Li, Quanjun2; Li, Shujia2; Shi, Xuhan2; Niu, Shifeng2; Liu, Shijie2; Liu, Ran2; Liu, Bo2; Luo, Xuan3; Si, Jianguo3,5
刊名NPJ QUANTUM MATERIALS
出版日期2021-03-02
卷号6
DOI10.1038/s41535-021-00320-x
通讯作者Li, Quanjun(liquanjun@jlu.edu.cn) ; Sun, Yuping(ypsun@issp.ac.cn) ; Liu, Bingbing(liubb@jlu.edu.cn)
英文摘要The adoption of high pressure not only reinforces the comprehension of the structure and exotic electronic states of transition metal dichalcogenides (TMDs) but also promotes the discovery of intriguing phenomena. Here, 1T-TaS2 was investigated up to 100 GPa, and re-enhanced superconductivity was found with structural phase transitions. The discovered I4/mmm TaS2 presents strong electron-phonon coupling, revealing a good superconductivity of the nonlayered structure. The P-T phase diagram shows a dome shape centered at similar to 20 GPa, which is attributed to the distortion of the 1T structure. Accompanied by the transition to nonlayered structure above 44.5 GPa, the superconducting critical temperature shows an increasing trend and reaches similar to 7 K at the highest studied pressure, presenting superior superconductivity compared to the original layered structure. It is unexpected that the pressure-induced re-enhanced superconductivity was observed in TMDs, and the transition from a superconductor with complicated electron-pairing mechanism to a phonon-mediated superconductor would expand the field of pressure-modified superconductivity.
资助项目National Key R&D Program of China[2018YFA0305900] ; National Key R&D Program of China[2016YFA0300404] ; NSFC[11874172] ; NSFC[11374120] ; NSFC[11634004] ; NSFC[51320105007] ; NSFC[11674326] ; NSFC[11874357] ; NSFC[U2032215] ; NSFC[U1932217] ; NSFC[U1832141] ; JLU Science and Technology Innovative Research Team[2017TD-01]
WOS研究方向Materials Science ; Physics
语种英语
WOS记录号WOS:000626057200002
出版者NATURE RESEARCH
资助机构National Key R&D Program of China ; NSFC ; JLU Science and Technology Innovative Research Team
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/121098]  
专题中国科学院合肥物质科学研究院
通讯作者Li, Quanjun; Sun, Yuping; Liu, Bingbing
作者单位1.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing, Peoples R China
2.Jilin Univ, State Key Lab Superhard Mat, Changchun, Peoples R China
3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei, Peoples R China
4.Chinese Acad Sci, High Field Magnet Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei, Peoples R China
5.Univ Sci & Technol China, Hefei, Peoples R China
推荐引用方式
GB/T 7714		 Dong, Qing,Li, Quanjun,Li, Shujia,et al. Structural phase transition and superconductivity hierarchy in 1T-TaS2 under pressure up to 100 GPa[J]. NPJ QUANTUM MATERIALS,2021,6.
APA Dong, Qing.,Li, Quanjun.,Li, Shujia.,Shi, Xuhan.,Niu, Shifeng.,...&Liu, Bingbing.(2021).Structural phase transition and superconductivity hierarchy in 1T-TaS2 under pressure up to 100 GPa.NPJ QUANTUM MATERIALS,6.
MLA Dong, Qing,et al."Structural phase transition and superconductivity hierarchy in 1T-TaS2 under pressure up to 100 GPa".NPJ QUANTUM MATERIALS 6(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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