Hydrostatic pressure effect on several superconductors: 1<i>T</i>-＆2<i>H</i>-Ta(S,Se)<sub>2 </sub>and (Ba, Sr)Bi<sub>3</sub>
ORAL
Abstract
Under high hydrostatic pressure in Cubic Anvil Pressure Apparent, we revealed the universal phase diagram of superconductivity and charge density wave (CDW) for 1T- and 2H-Ta(S,Se)2 by electrical transport and ac susceptibility. For 1T-, CDWs and SC coexists in narrow pressure windows and superconducting transition temperature (Tc) increases monotonously, clarifying that the superconducting cooper-pairing is associated with CDW instability [1, 2]. For 2H-, CDWs and SC coexists in a real sapce and Tc tends to saturation at critical pressures. Possible physical mechanisms are proposed. Besides, we firstly reported pressured-induced crossover from Type-II to Type-I superconductivity in spin-orbit-coupled SCs (Ba, Sr)Bi3 [3].
References：
[1] Bosen Wang, et al, Phys. Rev. B. 95, 220501(R) (2017).
[2] Bosen Wang, et al, Phys. Rev. B. 97, 220504 (R) (2018) (Editor’s Suggestion).
[3] Bosen Wang, et al, Phys. Rev. B. 98, 220506 (R) (2018).
References：
[1] Bosen Wang, et al, Phys. Rev. B. 95, 220501(R) (2017).
[2] Bosen Wang, et al, Phys. Rev. B. 97, 220504 (R) (2018) (Editor’s Suggestion).
[3] Bosen Wang, et al, Phys. Rev. B. 98, 220506 (R) (2018).
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Presenters
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Bosen Wang
Chinese Academy of Sciences,Institute of Physics
Authors
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Bosen Wang
Chinese Academy of Sciences,Institute of Physics
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Jinguang Cheng
Chinese Academy of Sciences, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Chinese Academy of Sciences,Institute of Physics, Institute of Physics, Chinese Academy of Sciences
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Yuping Sun
High Magnetic Field Laboratory, Chinese Academy of Sciences， Hefei
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Yoshiya Uwatoko
Institute for Solid State Physics, University of Tokyo, Institute for Solid State Physics, The University of Tokyo, Institute for Solid State Physics, Univ of Tokyo