Band structure motif and bosonic excitations in the fluctuating superconductivity of overdoped cuprates

ORAL

Abstract

Superconducting fluctuation is one of the central discussions in the physics of high-Tc superconductivity, especially when the system is optimally doped. Recent years have seen a renewed interest in this topic regarding overdoped cuprates, where the expectation is to seek a resolution closer to various BCS premises. However, a series of transport and optical experiments reveal substantial departure from the conventional wisdom.

We combine angle-resolved photoemission spectroscopy (ARPES) with inelastic neutron scattering (INS), and aim to provide a holistic view on this issue on overdoped single crystal Bi-2212. In particular, we discuss the role of the van Hove point on the electronic structure and the partial flat band around it [1]. The relation between electronic structure and the underlying magnetic excitation will also be discussed in the context of d-wave pairing and pair-breaking [2].

[1] Science 362, 62 (2018)
[2] Phys. Rev. Lett. 121, 057002 (2018)

*Miller Institute for Basic Research in Science
Department of Energy, Office of Science, Basic Energy Sciences

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Presenters

  • Yu He

    • Physics, University of California at Berkeley

Authors

  • Yu He

    • Physics, University of California at Berkeley

  • Su-Di Chen

    • Stanford University
    • Applied Physics, Stanford University
    • SLAC National Accelerator Laboratory
    • Geballe Laboratory for Advanced Materials, Department of Applied Physics, Stanford University
    • Stanford Univ

  • Makoto Hashimoto

    • SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource
    • Stanford Synchrotron Radiation Lightsource
    • SSRL, SLAC National Laboratory
    • SLAC National Accelerator Laboratory
    • Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory

  • Shan Wu

    • Physics, University of California at Berkeley
    • University of California, Berkeley

  • Xiang Chen

    • Lawrence Berkeley National Laboratory
    • Physics, University of California at Berkeley
    • University of California, Santa Barbara

  • Yu Song

    • Physics, University of California at Berkeley
    • University of California, Berkeley
    • Rice University

  • Hiroshi Eisaki

    • AIST, Japan
    • National Institute of Advanced Industrial Science and Technology
    • The National Institute of Advanced Industrial Science and Technology
    • National Institute of Advanced Industrial Science and Technology, Japan

  • Zhixun Shen

    • Standford
    • Stanford University
    • Stanford Univeristy
    • Applied Physics, Stanford University
    • SLAC National Accelerator Laboratory
    • Geballe Laboratory for Advanced Materials, Department of Applied Physics, Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • SIMES, SLAC - Natl Accelerator Lab
    • Stanford Univ

  • Robert J Birgeneau

    • University of California, Berkeley
    • Physics, University of California at Berkeley
    • Physics, University of California, Berkeley
    • Department of Physics, University of California, Berkeley