An Angle Resolved Thermodynamics Study of Cuprate Superconductors

ORAL

Abstract

The thermodynamics properties of a system contain vital information on its electronic states, the contribution of which in typical bulk measurements is averaged and integrated over momentum and energy space, and needs to be carefully isolated from other contributions such as that of phonons. In this work, we demonstrate that the distribution of electronic entropy over momentum and energy space can be directly probed using Angle Resolved Photoemission Spectroscopy, establishing photoemission as an alternative and complimentary probe of electronic thermodynamics. With a series of BSCCO samples that spans the cuprate phase diagram, we investigate their entropy evolution as a function of doping, momentum, energy and temperature, and explore their implications in regards to the nature of the pseudogap phase and possible Fermi surface reconstruction scenarios.

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Authors

  • Xiaoqing Zhou

    Univ of Colorado - Boulder, University of Colorado at Boulder

  • Haoxiang Li

    Univ of Colorado - Boulder, Department of Physics, University of Colorado at Boulder, CO 80309, USA, University of Colorado at Boulder

  • Stephen Parham

    University of Colorado at Boulder

  • Justin Waugh

    Univ of Colorado - Boulder, University of Colorado at Boulder

  • 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

  • Helmuth Berger

    D\'epartment de Physique, Ecole Polytechnique F\'ed\'erale de Lausanne

  • Kunihiko Oka

    University of Colorado at Boulder

  • Hiroshi Eisaki

    Nanoelectronics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Institute of Advanced Industrial Science and Technology, National institute of advanced industrial science and technology, AIST, Japan

  • Gerald Arnold

    University of Colorado at Boulder

  • Daniel Dessau

    Univ of Colorado - Boulder, University of Colorado at Boulder