Effect of electron irradiation on YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7−δ</sub> superconductor from London penetration depth measurement

ORAL

Abstract

Temperature-dependent London penetration depth λ (T) of optimally doped YBa2Cu3O7−δ single crystals was measured by increasing controlled artificial disorders via 2.5 MeV electron irradiation. The irradiation caused significant suppression of the superconductors critical temperature and the low-temperature behavior of λ (T) evolves from a T-linear in pristine state to a T2 behavior after the irradiation, expected for a line-nodal d-wave superconductor. According to the normalized superfluid density analysis, we found that the scattering potential strength is estimated in between Born and Unitary limits with a phase shift to be around 65 degree.

*This work was supported by the US DOE, Office of Science, BES Materials Science and Engineering Division under contract #DE-AC02-07CH11358.

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Publication: Kyuil Cho et al., Phys. Rev. B 105, 014514 (2022)

Presenters

  • Kyuil Cho

    • Hope College

Authors

  • Kyuil Cho

    • Hope College

  • Marcin Konczykowski

    • Ecole Polytechnique, France
    • Ecole Polytechnique

  • Serafim Teknowijoyo

    • Chapman University

  • Vivek Mishra

    • University of Chinese Academy of Sciences, China
    • University of Chinese Academy of Sciences

  • Sunil Ghimire

    • Iowa State University and Ames Laboratory
    • Ames National Laboratory
    • Iowa State University

  • Makariy A Tanatar

    • Iowa State University and Ames Laboratory
    • Ames Laboratory/Iowa State University
    • Ames National Laboratory

  • Ruslan Prozorov

    • Iowa State University and Ames Laboratory
    • Ames National Laboratory