Interplay of the Gap and Kink in Bi2212 with Time-Resolved ARPES

ORAL

Abstract

In conventional superconductors, electron-boson coupling plays a key role in the mechanism for superconductivity. Strong electron-boson coupling is present in cuprate superconductors as well, but its relation to superconductivity is unknown. Angle-resolved photoemission spectroscopy (ARPES) sees superconductivity as a gap, and sees electron-boson coupling as a dispersion kink. Here we identify a feature that arises from the interplay of the gap and kink, and isolate the feature using time-resolved ARPES. We discuss how this feature could be used to establish whether there is a relationship between electron-boson coupling and superconductivity.

*This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division under Contract No. DE-AC02-05-CH11231 within the Ultrafast Materials Science Program (KC2203).

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Presenters

  • Tristan Miller

    • Materials Sciences Division, Lawrence Berkeley National Laboratory

Authors

  • Tristan Miller

    • Materials Sciences Division, Lawrence Berkeley National Laboratory

  • Wentao Zhang

    • Department of Physics and Astronomy, Shanghai Jiao Tong University

  • Hiroshi Eisaki

    • IAIST
    • Inst. of Advanced Industrial Science and Tech., Tsukuba,
    • National Institute for Advanced Industrial Science and Technology
    • National Institute of Advanced Industrial Science and Technology
    • Electronics and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology
    • AIST

  • Alessandra Lanzara

    • University of California Berkeley
    • University of California
    • Univ of California - Berkeley
    • Physics Department - University California, Berkeley, Materials Sciences Division - Lawrence Berkeley National Laboratory
    • Materials Sciences Division, Lawrence Berkeley National Laboratory
    • University of California, Berkeley and Lawrence Berkeley National Laboratory
    • Department of Physics, Univ of California - Berkeley
    • Univ. of California - Berkeley