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Emergence of strong-coupling superconductivity and quantum criticality correlated with Lifshitz transitions in the alternate stacking compound 4 H b-TaS 2

文献类型：期刊论文

作者Xu, Shuxiang5,6,7; Deng, Junze5,6; Gao, Jingjing8; Meng, Fanyu9,10; Shi, Lifen1,5,6; Yang, Pengtao5,6; Wang, Ningning1,5,6; Liu, Ziyi1,5,6; Sun, Jianping1,5,6; Uwatoko, Yoshiya2
刊名PHYSICAL REVIEW B
出版日期2024-04-24
卷号109
ISSN号2469-9950
DOI10.1103/PhysRevB.109.144522
通讯作者Wang, Zhijun(wzj@iphy.ac.cn) ; Wang, Bosen(bswang@iphy.ac.cn) ; Cheng, Jinguang(jgcheng@iphy.ac.cn)
英文摘要4 H b -TaS 2 is a naturally formed quasi -two-dimensional heterojunction material composed of alternating monolayers of insulating (1 T -) and superconducting (1 H -) TaS 2 . We report on a comprehensive high-pressure study on the interplay between charge -density wave (CDW) and superconductivity (SC) in 4 H b -TaS 2 . The results uncover a dome -shaped strong -coupling superconductor on the border of a 3 x 3 commensurate CDW at P c1 approximate to 2 . 0 GPa: (1) nearly one order enhancement of upper critical field B c 2 (0); (2) the derived 2 4 0 / k B T c beyond the BCS theory, decaying to a conventional one above 4.5 GPa; (3) the exponent of normal -state resistivity n approximate to 1 . 50 and triply enhanced electronic effective mass. Under pressure, a third CDW emerging from 2.0 GPa is related to the original two CDWs, then disappears above 11.5 GPa. The temperature dependence of B c 2 ( T ) collapses into a universal curve and the comparison of B c 2 ( T ) to a polar -state function in 4 H b -TaS 2 . Theoretical calculations proposed the stronger interlayer coupling and band hybridization responsible for strong -coupling SC; the suppression of new CDWs is related to band inversions between the 1 T -Ta- d xy (GM1 + ) and S- p z bands (GM2-) at the P A point; above 5.0 GPa, the coexisting weak -coupling SC and linear magnetoresistance can be attributed to the formation of electronic bands along the M - K lines and the P A point. Our discovery provides an excellent example to demonstrate the interplay of the strong -coupling superconducting state and topological electronic state in van der Waals heterojunctions.
WOS关键词CHARGE-DENSITY WAVES ; TOTAL-ENERGY CALCULATIONS ; 4HB-TAS2 ; TEMPERATURE
资助项目National Key Research and Development Program of China[2023YFA1406100] ; National Key Research and Development Program of China[2023YFA1607400] ; National Key Research and Development Program of China[2021YFA1400200] ; National Key Research and Development Program of China[2021YFA1401800] ; National Key Research and Development Program of China[2022YFA1403800] ; National Key Research and Development Program of China[2021YFA1600201] ; National Key Research and Development Program of China[2022YFA1403203] ; National Natural Science Foundation of China[12025408] ; National Natural Science Foundation of China[11921004] ; National Natural Science Foundation of China[12074414] ; National Natural Science Foundation of China[12274412] ; National Natural Science Foundation of China[12174443] ; Beijing Natural Science Foundation[Z200005] ; Strategic Priority Research Program of CAS[XDB33000000] ; Chinese Academy of Sciences President's International Fellowship Initiative[2024PG0003] ; K.C. Wong Education Foundation[GJTD-2020-01] ; National Natural Science Foundation of China[U1932217] ; National Natural Science Foundation of China[U2032215] ; Chinese Academy of Sciences' Large -Scale Scientific Facility[U1932217] ; Chinese Academy of Sciences' Large -Scale Scientific Facility[U2032215] ; Beijing National Laboratory for Condensed Matter Physics ; Youth Promotion Association of CAS[2018010] ; Outstanding member of Youth Promotion Association of CAS[Y2022004] ; CAC station of Synergic Extreme Condition User Facility (SECUF)
WOS研究方向Materials Science ; Physics
语种英语
WOS记录号WOS:001250622300006
出版者AMER PHYSICAL SOC
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; Beijing Natural Science Foundation ; Strategic Priority Research Program of CAS ; Chinese Academy of Sciences President's International Fellowship Initiative ; K.C. Wong Education Foundation ; National Natural Science Foundation of China ; Chinese Academy of Sciences' Large -Scale Scientific Facility ; Beijing National Laboratory for Condensed Matter Physics ; Youth Promotion Association of CAS ; Outstanding member of Youth Promotion Association of CAS ; CAC station of Synergic Extreme Condition User Facility (SECUF)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/136481]  
专题中国科学院合肥物质科学研究院
通讯作者Wang, Zhijun; Wang, Bosen; Cheng, Jinguang
作者单位1.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100190, Peoples R China
2.Univ Tokyo, Inst Solid State Phys, Kashiwanoha 5-1-5, Kashiwa, Chiba 2778581, Japan
3.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China
4.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China
5.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
6.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
7.Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100871, Peoples R China
8.Chinese Acad Sci, Key Lab Mat Phys, Inst Solid State Phys, Hefei 230031, Peoples R China
9.Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China
10.Renmin Univ China, Beijing Key Lab Optoelect Funct Mat & Micronano De, Beijing 100872, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Shuxiang,Deng, Junze,Gao, Jingjing,et al. Emergence of strong-coupling superconductivity and quantum criticality correlated with Lifshitz transitions in the alternate stacking compound 4 H b-TaS 2[J]. PHYSICAL REVIEW B,2024,109.
APA Xu, Shuxiang.,Deng, Junze.,Gao, Jingjing.,Meng, Fanyu.,Shi, Lifen.,...&Cheng, Jinguang.(2024).Emergence of strong-coupling superconductivity and quantum criticality correlated with Lifshitz transitions in the alternate stacking compound 4 H b-TaS 2.PHYSICAL REVIEW B,109.
MLA Xu, Shuxiang,et al."Emergence of strong-coupling superconductivity and quantum criticality correlated with Lifshitz transitions in the alternate stacking compound 4 H b-TaS 2".PHYSICAL REVIEW B 109(2024).

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来源：合肥物质科学研究院

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