Optical studies of symmetry breaking in cuprate superconductors

ORAL

Abstract

We probe the spectral character of broken symmetry states in high –temperature cuprate superconductors (HTS) using polarization sensitive Faraday rotation measurements. We measure the complex Faraday angleat zero magnetic field on a series of HTS thin films with various levels of doping as a function of energy (0.1-3 eV), temperature (10-300K) and sample orientation. We observe sinusoidal variation of Faraday rotation angle with respect to the sample orientation (linear dichroism) which indicates the presence of broken linear symmetry. The amplitude of the linear dichroism signal is strongest in the underdoped films and increases with decreasing temperature.

*This work supported by NSF- DMR1410599, NSERC, CFI-OIT and the Canadian Institute for Advanced Research.

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Presenters

  • Alok Mukherjee

    • Physics, State Univ of NY - Buffalo
    • State Univ of NY - Buffalo

Authors

  • Alok Mukherjee

    • Physics, State Univ of NY - Buffalo
    • State Univ of NY - Buffalo

  • Jungryeol Seo

    • Physics, State Univ of NY - Buffalo
    • State Univ of NY - Buffalo

  • Mumtaz Murat Arik

    • Physics, State Univ of NY - Buffalo
    • State Univ of NY - Buffalo

  • Chao Zhang

    • Department of Physics, University of Toronto
    • University of Toronto

  • Hao Zhang

    • Department of Physics, University of Toronto
    • University of Toronto

  • Tal Kirzhner

    • Technion

  • Peter Armitage

    • Department of Physics and Astronomy, The Johns Hopkins University
    • Department of Physics and Astronomy, Johns Hopkins Unversity
    • Johns Hopkins University
    • Johns Hopkins Univ
    • Institute for Quantum Matter, Johns Hopkins University
    • The Johns Hopkins University

  • Gad Koren

    • Technion

  • John Wei

    • Department of Physics, University of Toronto
    • University of Toronto
    • Department of Physics, Univ of Toronto

  • John Cerne

    • Physics, State Univ of NY - Buffalo
    • State Univ of NY - Buffalo