Exploring momentum, temperature and doping dependence of mass renormalization in Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$

ORAL

Abstract

Among the many novel aspects of cuprate high-temperature superconductors, one of the most important is that the parent undoped state of these materials is a strongly correlated Mott insulator. How these correlations impact or contribute to the superconducting state in the doped materials remains a critical aspect of understanding the mechanism of high temperature superconductivity. From a newly developed technique of studying self-energy in Angle-Resolved Photoemission Spectroscopy (ARPES), we explore the mass enhancement at low frequency as a function of momentum, temperature and doping. Comparing our result to the other measures such as specific heat and quantum oscillation, we show that ARPES can be a highly useful tool for effective mass measurement.

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Authors

  • Haoxiang Li

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

  • X.Q. Zhou

    • Department of Physics, University of Colorado at Boulder, CO 80309, USA

  • S. Parham

    • Department of Physics, University of Colorado at Boulder, CO 80309, USA

  • T.J. Reber

    • Department of Physics, University of Colorado at Boulder, CO 80309, USA

  • Y. Cao

    • Department of Physics, University of Colorado at Boulder, CO 80309, USA

  • J.A. Waugh

    • Department of Physics, University of Colorado at Boulder, CO 80309, USA

  • Z. Xu

    • Brookhaven National Lab, Upton, New York 11973, USA

  • J. Schneeloch

    • Brookhaven National Lab, Upton, New York 11973, USA

  • R.D. Zhong

    • Brookhaven National Lab, Upton, New York 11973, USA

  • G. Gu

    • Brookhaven National Lab, Upton, New York 11973, USA

  • H. Berger

    • D\'epartment de Physique, Ecole Polytechnique F\'ed\'erale de Lausanne, CH-1015 Lausanne, Switzerland

  • G. Arnold

    • Department of Physics, University of Colorado at Boulder, CO 80309, USA

  • D.S. Dessau

    • Department of Physics, University of Colorado at Boulder, CO 80309, USA