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  • Dong, YuNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China.;Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China. (author)

Observation of a Ubiquitous (π, π)-Type Nematic Superconducting Order in the Whole Superconducting Dome of Ultra-Thin BaFe2–xNixAs2 Single Crystals

  • Article/chapterEnglish2021

Publisher, publication year, extent ...

  • Institute of Physics Publishing (IOPP),2021
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-458329
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-458329URI
  • https://doi.org/10.1088/0256-307X/38/9/097401DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Title in WoS: Observation of a Ubiquitous (pi, pi)-Type Nematic Superconducting Order in the Whole Superconducting Dome of Ultra-Thin BaFe2-x Ni x As2 Single Crystals
  • In iron-based superconductors, the (0, pi) or (pi, 0) nematicity, which describes an electronic anisotropy with a four-fold symmetry breaking, is well established and believed to be important for understanding the superconducting mechanism. However, how exactly such a nematic order observed in the normal state can be related to the superconducting pairing is still elusive. Here, by performing angular-dependent in-plane magnetoresistivity using ultra-thin flakes in the steep superconducting transition region, we unveil a nematic superconducting order along the (pi, pi) direction in electron-doped BaFe2 - x Ni x As2 from under-doped to heavily overdoped regimes with x = 0.065-0.18. It shows superconducting gap maxima along the (pi, pi) direction rotated by 45 degrees from the nematicity along (0, pi) or (pi, 0) direction observed in the normal state. A similar (pi, pi)-type nematicity is also observed in the under-doped and optimally doped hole-type Ba1 - y K y Fe2As2, with y = 0.2-0.5. These results suggest that the (pi, pi) nematic superconducting order is a universal feature that needs to be taken into account in the superconducting pairing mechanism in iron-based superconductors.

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  • Lv, YangyangNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China.;Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China. (author)
  • Xu, ZuyuNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China.;Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China. (author)
  • Abdel-Hafiez, MahmoudUppsala universitet,Energimaterialens fysik,Natl Univ Sci & Technol MISiS, Moscow 119049, Russia(Swepub:uu)mahha746 (author)
  • Vasiliev, A. N.Natl Univ Sci & Technol MISiS, Moscow 119049, Russia.;Moscow MV Lomonosov State Univ, Moscow 119991, Russia. (author)
  • Zhu, HaipengHuazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China.;Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China. (author)
  • Wang, JunfengHuazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China.;Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China. (author)
  • Li, LiangHuazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China.;Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China. (author)
  • Tian, WanghaoNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China.;Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China. (author)
  • Chen, WeiNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China.;Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China. (author)
  • Bao, SongNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China.;Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China. (author)
  • Wang, JinghuiNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China.;Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China. (author)
  • Wu, YueshenShanghaiTech Univ, ShanghaiTech Lab Topol Phys, Shanghai 201210, Peoples R China.;ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China. (author)
  • Huang, YulongChinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.;Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. (author)
  • Li, ShiliangChinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.;Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. (author)
  • Yuan, JieChinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.;Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. (author)
  • Jin, KuiChinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.;Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. (author)
  • Zhang, LabaoNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China. (author)
  • Wang, HuabingNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China. (author)
  • Yu, Shun-LiNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China.;Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China. (author)
  • Wen, JinshengNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China.;Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China. (author)
  • Li, Jian-XinNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China.;Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China. (author)
  • Li, JunNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China.;ShanghaiTech Univ, ShanghaiTech Lab Topol Phys, Shanghai 201210, Peoples R China.;ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China. (author)
  • Wu, PeihengNanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China.;Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Peoples R China. (author)
  • Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China.;Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China.;Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.;Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China.Energimaterialens fysik (creator_code:org_t)

Related titles

  • In:Chinese Physics Letters: Institute of Physics Publishing (IOPP)38:90256-307X1741-3540

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