Low Temperature Terahertz Nano-spectroscopy and Imaging of an YBCO Thin Film

ORAL

Abstract

We discuss the development of cryogenic scanning near-field microscope suitable for nano-scale imaging and spectroscopy in the terahertz frequency range with the spatial resolution below 130 nm. We report near-field measurement using this technology of a c-axis oriented YBa2Cu3O7 thin film above and below the superconducting transition temperature. Contrast in the near-field signal can be observed between the superconducting and normal state. We will discuss the spatial and temperature dependence of the terahertz near-field signal and spectra.

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Presenters

  • Ran Jing

    • Department of Physics, Columbia University

Authors

  • Ran Jing

    • Department of Physics, Columbia University

  • H. Stinson

    • Department of Physics, University of California, San Diego

  • Ethan Cho

    • Department of Mechanical Engineering, University of California, Riverside
    • Mechanical Engineering, University of California Riverside

  • Shane Cybart

    • Department of Mechanical Engineering, University of California, Riverside
    • Univ of California - Riverside

  • Dimitri Basov

    • Physics, Columbia University
    • Department of Physics, Columbia University
    • Columbia Univ
    • Columbia University