Quantum criticality in high temperature superconducting cuprates

ORAL

Abstract

Anomalous transport behavior in near-optimally-doped high temperature superconducting cuprates has been linked to fluctuations associated with a quantum critical point. Using resonant ultrasound spectroscopy we find evidence for a phase boundary inside the superconducting dome in the temperature-doping phase diagram of YBCO cuprates. This suggests a quantum critical point near optimal doping that is hidden by superconductivity.

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Authors

  • Arkady Shekhter

    • Pulsed Field Facility, NHMFL, LANL, Los Alamos, NM

  • Brad Ramshaw

    • Pulsed Field Facility, NHMFL, LANL, Los Alamos, NM

  • Ross McDonald

    • Pulsed Field Facility, NHMFL, LANL, Los Alamos, NM

  • Jon B. Betts

    • Pulsed Field Facility, NHMFL, LANL, Los Alamos, NM

  • Fedor Balakirev

    • Pulsed Field Facility, NHMFL, LANL, Los Alamos, NM

  • Scott Riggs

    • Stanford University, Palo Alto, CA

  • Ruixing Liang

    • University of British Columbia, Vancouver, Canada

  • Doug Bonn

    • University of British Columbia, Vancouver, Canada

  • Walter Hardy

    • University of British Columbia, Vancouver, Canada

  • Albert Migliori

    • Pulsed Field Facility, NHMFL, LANL, Los Alamos, NM