Fermi-surface reconstruction in the cuprate superconductor YBCO via the thermal Hall effect

ORAL

Abstract

We recently showed that the thermal conductivity $\kappa_{xx}$ can be used to directly measure the upper critical field H$_{c2}$ in cuprate superconductors [1]. Here we show that the thermal Hall conductivity $\kappa _{xy}$ can be used to probe the nature of the carriers in these materials. We present a study of $\kappa_{xy}$ in YBCO at a doping p $=$ 0.11, as a function of magnetic field up to 35 T down to low temperature. The fact that $\kappa_{xy}$ is negative above H$_{c2} \quad =$ 24 T confirms the presence of an electron-like pocket in the normal-state Fermi surface [2], the result of a reconstruction caused by the emergence of charge order at low temperature [3]. We show how the Fermi-surface reconstruction evolves as a function of field and temperature. [1] G. Grissonnanche \textit{et al.}, arXiv:1303.3856 (2013). [2] D. LeBoeuf \textit{et al}., Nature 450, 533 (2007). [3] F. Lalibert\'{e} \textit{et al}., Nature Communications 2, 432 (2011).

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Authors

  • Gael Grissonnanche

    University of Sherbrooke

  • Sophie Dufour-Beaus\'ejour

    University of Sherbrooke, Universit\'e de Sherbrooke

  • Francis Laliberte

    Universite de Sherbrooke, University of Sherbrooke

  • Alexis Riopel

    University of Sherbrooke

  • Olivier Cyr-Choiniere

    University of Sherbrooke

  • Nicolas Doiron-Leyraud

    University of Sherbrooke, Universit\'e de Sherbrooke

  • Louis Taillefer

    Universite de Sherbrooke, University of Sherbrooke

  • James Day

    The University of British Columbia, University of British Columbia

  • Brad Ramshaw

    University of British Columbia, National High Magnetic Field Laboratory, Los Alamos

  • Ruixing Liang

    The University of British Columbia, University of British Columbia, Department of Physics and Astronomy, University of British Columbia; Quantum Matter Institute, University of British Columbia

  • Doug Bonn

    University of British Columbia

  • Walter Hardy

    The University of British Columbia, University of British Columbia, Department of Physics and Astronomy, University of British Columbia; Quantum Matter Institute, University of British Columbia

  • David Graf

    NHMFL Tallahassee, National High Magnetic Field Laboratory, National High Magnetic Field Laboratory, Tallahassee

  • Steffen Kramer

    LNCMI Grenoble