Size effect on supercurrent screening in large array superconducting anti-dot thin films

ORAL

Abstract

We fabricated well-ordered and large array niobium (Nb) anti-dot thin films using a monolayer of polymer/nanosphere hybrid as a template. The hole diameter and center-to-center distance can be tuned independently. By applying a perpendicular magnetic field, we observed pronounced oscillations with field in both magnetization and resistivity due to the criteria of the flux quantization, which is reminiscent of the well-known Little-Parks experiment in a thin-walled superconducting cylinder. By varying the hole diameter, the detailed size effect on supercurrent screening can be explored and will be discussed.

*National Science Concil in Taiwan and research program on nanoscience and nanotechnology at Academia Sinica, Taipei

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Authors

  • Hsiang-Hsi Kung

    • Institute of Physics, Academia Sinica, Nankang, Taipei, Taiwan R.O.C.

  • Ting-Hui Chen

    • Institute of Physics, Academia Sinica, Nankang, Taipei, Taiwan R.O.C.

  • Chia-Tso Hsieh

    • Institute of Physics, Academia Sinica
    • Institute of Physics, Academia Sinica, Nankang, Taipei, Taiwan R.O.C.

  • Chi-Chih Ho

    • Institute of Physics, Academia Sinica, Nankang, Taipei, Taiwan R.O.C.

  • Ken-Hui Lin

    • Institute of Physics and Research Center of Applied Science, Academia Sinica, Nankang, Taipei, Taiwan R.O.C.

  • Wen-Tau Juan

    • Institute of Physics, Academia Sinica, Nankang, Taipei, Taiwan R.O.C.
    • Institute of Physics, Academia Sinica, Taipei, Taiwan

  • Wei-Li Lee

    • Institute of Physics, Academia Sinica
    • Institute of Physics, Academia Sinica, Nankang, Taipei, Taiwan R.O.C.
    • Institute of Physics, Academia Sinica, Taipei, Taiwan