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.

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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