Nanoscale photocurrent imaging of local superconductivity

ORAL

Abstract

The iron-based superconductors have recently been found to be a promising candidate for topological superconductivity, which attracts significant research interests because of the possible realization of Majorana bound states and potential application in topological quantum computers. Here we study the photocurrent distribution in mechanically exfoliated superconductor thin film at the nanoscale using cryo-magneto scanning near-field optical microscopy (m-SNOM). Our near-field photocurrent mapping likely provides an insight of local superconductivity.

*Research on m-SNOM development is supported as part of Programmable Quantum Materials (Pro-QM), an Energy Frontier Research Center (EFRC) funded by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), under award DE-SC0019443. M.K.L. and Q.L. are supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under Contract No. DE-SC0012704. M.K.L. acknowledges support from the NSF Faculty Early Career Development Program under Grant No. DMR - 2045425.

–

Presenters

  • Boyi Zhou

    • Columbia University

Authors

  • Boyi Zhou

    • Columbia University

  • Ran Jing

    • Brookhaven National Laboratory
    • Columbia University

  • Jiacheng Sun

    • Stony Brook University (SUNY)

  • Wenjun Zheng

    • Stony Brook University (SUNY)

  • Zijian Zhou

    • Stony Brook University (SUNY)

  • Lukas Wehmeier

    • Brookhaven National Laboratory (BNL)

  • Juntao Yao

    • Stony Brook University
    • Stony Brook University (SUNY)

  • Genda Gu

    • Brookhaven National Laboratory (BNL)

  • Qiang Li

    • Stony Brook University (SUNY)

  • Xu Du

    • Stony Brook University (SUNY)

  • Dmitri N Basov

    • Columbia University

  • Mengkun Liu

    • Stony Brook University (SUNY)