trARPES on Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8}$ using Mid-Infrared Pump

ORAL

Abstract

The field of time-resolved ARPES (trARPES) has matured greatly in the last several years and has proven a useful tool in the study of cuprate superconductivity. However, previous experiments have been limited in the pump wavelength to energies of 1.5 eV (or more), far above the relevant energy scales for superconductivity. Here we use an OPA/DFG setup to create a mid-infrared pump, with tunable photon energies from 60-300 meV, allowing us to weakly perturb the superconductivity of optimally doped Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8}$. Here we report on the k-resolved electron and gap dynamics of Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8}$ under this excitation scheme.

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Authors

  • Stephen Parham

    University of Colorado at Boulder

  • Haoxiang Li

    University of Colorado at Boulder

  • Xiaoqing Zhou

    Univ of Colorado - Boulder, University of Colorado at Boulder

  • Justin Waugh

    University of Colorado at Boulder

  • Tom Nummy

    University of Colorado at Boulder

  • Justin Griffith

    University of Colorado at Boulder

  • Zhijun Xu

    Brookhaven National Laboratory

  • John Schneeloch

    Brookhaven National Laboratory, Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, NY 11973, USA, Brookhaven Natl Lab, BNL, Stony Brook, Brookhaven National Lab

  • Ruidan Zhong

    Brookhaven National Laboratory, Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, NY 11973, USA, BNL, Stony Brook, Brookhaven National Lab

  • Genda Gu

    Brookhaven National Lab, Brookhaven National Laboratory, Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, NY 11973, USA, Brookhaven Natl Lab, BNL, Department of Physics, Brookhaven National Laboratory, Brookhaven National Lab, Upton, NY, University of Colorado at Boulder

  • Daniel Dessau

    University of Colorado at Boulder