Driving the Higgs oscillation in cuprates: unveiling collective modes or interactions coupled to Cooper pairs

ORAL

Abstract

The Higgs mode of a superconductor is a collective excitation of the amplitude of the superconducting order parameter. It can be coherently driven at a frequency 2ω by a multicycle terahertz pulse of frequency ω. This then leads to third harmonic generation (THG) as a result of sum frequency generation between the oscillating condensate and the terahertz driving pulse. We applied such experimental scheme to different families of cuprate high-Tc superconductors. By phase-resolving the THG response with respect to the terahertz drive, we uncover the universal anti-resonance of the driven Higgs oscillation in all samples. This may be understood in terms of an additional collective mode coupled to the Higgs mode. Careful analysis of the anti-resonance feature as a function of hole doping with the help of a coupled oscillators model suggests that the coupled mode could be the magnetic resonant mode. Our findings may shed light on the pairing mechanism in d-wave superconductors.

*Hao Chu acknowledges support from the Max Planck-UBC-UTokyo Centre for Quantum Materials

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Presenters

  • Hao Chu

    • Max Planck Institute for Solid State Research

Authors

  • Hao Chu

    • Max Planck Institute for Solid State Research

  • Min-Jae Kim

    • Max Planck Institute for Solid State Research

  • Kota Katsumi

    • Physics, University of Tokyo

  • Sergey Kovalev

    • Helmholtz-Zentrum Dresden-Rossendorf

  • Robert Dawson

    • Max Planck Institute for Solid State Research

  • Lukas Schwarz

    • Max Planck Institute for Solid State Research

  • Naotaka Yoshikawa

    • Physics, University of Tokyo
    • Department of Physics, University of Tokyo

  • Gideok Kim

    • Max Planck Institute for Solid State Research

  • Daniel Putzky

    • Max Planck Institute for Solid State Research
    • Max Plank Institute for Solid State Research

  • Jan-Christoph Deinert

    • Helmholtz-Zentrum Dresden-Rossendorf

  • Nilesh Awari

    • Helmholtz-Zentrum Dresden-Rossendorf

  • Min Chen

    • Helmholtz-Zentrum Dresden-Rossendorf

  • Georg Christiani

    • Max Planck Institute for Solid State Research

  • Gennady Logvenov

    • Max Planck Institute for Solid State Research
    • Max Plank Institute for Solid State Research

  • Yann Gallais

    • University Paris Diderot

  • Alexander Boris

    • Max Planck Institute for Solid State Research

  • Bernhard Keimer

    • Solid State Spectroscopy, Max Planck Institute for Solid State Research
    • Max Planck Institute for Solid State Research
    • Solid State Spectrsocopy, Max Planck Institute for Solid State Research
    • Max Plank Institute for Solid State Research

  • Andreas P Schnyder

    • Max-Planck Institute for Solid State Physics
    • Max Planck Institute for Solid State Research
    • MPI Stuttgart

  • Dirk Manske

    • Max Planck Institute for Solid State Research
    • Quantum Many-Body Theory, Max-Planck-Institut für Festkörperforschung
    • Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany

  • Michael Gensch

    • Helmholtz-Zentrum Dresden-Rossendorf

  • Zhe Wang

    • Helmholtz-Zentrum Dresden-Rossendorf

  • Ryo Shimano

    • Physics, University of Tokyo
    • Cryogenic Research Center and Department of Physics, University of Tokyo

  • Stefan Kaiser

    • Max Planck Institute for Solid State Research