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.

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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