Time-Resolved ARPES Study of Non-Equilibrium Quasiparticle Dynamics in Cuprate Superconductors

ORAL

Abstract

We use Time- and Angle-Resolved Photoemission (TR-ARPES) to measure the relaxation dynamics of low energy excitations in the cuprate superconductor Bi-2212. We find an as-yet unreported temperature dependence in nodal quasiparticle spectral weight which is sensitive to the critical temperature. We also find possible evidence for non-thermal transient electronic behavior.

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Authors

  • Christopher Smallwood

    Department of Physics, University of California, Berkeley, CA 94720, USA, University of California, Berkeley; Lawrence Berkeley National Laboratory

  • Jeff Graf

    Lawrence Berkeley National Lab

  • Chris Jozwiak

    Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA, Lawrence Berkeley National Lab

  • Hiroshi Eisaki

    Nanoelectronics Research Institute, AIST, Japan, AIST, Japan, AIST, University of Tokyo; CREST, Japan Science and Technology Agency; RIKEN (The Institute of Physical and Chemical Research)

  • Robert Kaindl

    Lawrence Berkeley National Lab

  • Dung-Hai Lee

    University of California, Berkeley; Lawrence Berkeley National Laboratory

  • Alessandra Lanzara

    Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA, University of California, Berkeley; Lawrence Berkeley National Laboratory