Momentum-Dependent Ultrafast Quasiparticle Dynamics in Optimally-Doped Bi-2212 Monitored with Time-Resolved ARPES

ORAL

Abstract

We have employed the novel technique of time- and angle-resolved photoelectron spectroscopy (t-ARPES) to investigate the quasiparticle dynamics in photoexcited, optimally-doped Bi2Sr2CaCu2O8 superconductor across the superconductor-metal transition. In this talk, we will present and analyze the substantially different ultrafast dynamics, tracked in momentum-dependent fashion, by probing the nodal and antinodal regions of the Brillouin zone, on a 35 femtosecond timescale. The consequences of these findings in terms of reentrant superconductivity will be discussed.

–

Authors

  • Georgi Dakovski

    • Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park CA

  • Tomasz Durakiewicz

    • Condensed Matter and Magnet Science, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos NM

  • Jian-Xin Zhu

    • Physics of Condensed Matter and Complex Systems, Theoretical Division, Los Alamos National Laboratory, Los Alamos NM

  • Peter Riseborough

    • Department of Physics, Temple University - Philadelphia PA

  • Genda Gu

    • Condensed Matter Physics \& Materials Science, Brookhaven National Laboratory, Upton NY

  • Steve Gilbertson

    • Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos NM

  • George Rodriguez

    • Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos NM