High temperature RIXS study of charge transfer excitations in cuprates

ORAL

Abstract

Resonant inelastic X-ray scattering (RIXS) is a promising technique to study momentum-resolved electronic excitations in strongly correlated materials. Here we present results of a recent Cu K-edge RIXS study on the archetypal hole-doped cuprate La2-xSrxCuO4 and electron-doped cuprate Nd2-xCexCuO4. Our measurements, which range from low temperature (15 K) to very high temperature (1200 K), indicate distinct spectral weight changes of charge-transfer excitations below ~ 2 eV. We will make a detailed comparison of the temperature dependent charge-transfer excitations in electron- and hole- doped cuprates.

*Work at the University of Minnesota funded by the Department of Energy through the University of Minnesota Center for Quantum Materials under DE-SC0016371.

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Presenters

  • Biqiong Yu

    • University of Minnesota
    • School of Physics and Astronomy, University of Minnesota

Authors

  • Biqiong Yu

    • University of Minnesota
    • School of Physics and Astronomy, University of Minnesota

  • Kenji Ishii

    • Synchrotron Radiation Research Center, National Institutes for Quantum

  • Shun Asano

    • Department of Physics, Tohoku University

  • Masaki Fujita

    • Tohoku University
    • Department of Physics, Tohoku University

  • Diego M Casa

    • Advanced Photon Source, Argonne National Laboratory, USA
    • Argonne National Lab
    • Argonne National Laboratory
    • Advanced Photon Source, Argonne National Laboratory

  • Guichuan Yu

    • University of Minnesota
    • Informatics Institute, University of Minnesota
    • School of Physics and Astronomy, University of Minnesota

  • Martin Greven

    • University of Minnesota
    • School of Physics and Astronomy, University of Minnesota
    • Physics and Astronomy, University of Minnesota