• Rapid Communication

Influence of optically quenched superconductivity on quasiparticle relaxation rates in Bi2Sr2CaCu2O8+δ

Christopher L. Smallwood, Wentao Zhang, Tristan L. Miller, Gregory Affeldt, Koshi Kurashima, Chris Jozwiak, Takashi Noji, Yoji Koike, Hiroshi Eisaki, Dung-Hai Lee, Robert A. Kaindl, and Alessandra Lanzara
Phys. Rev. B 92, 161102(R) – Published 6 October 2015
PDFHTMLExport Citation

Abstract

We use time- and angle-resolved photoemission to measure quasiparticle relaxation dynamics across a laser-induced superconducting phase transition in Bi2Sr2CaCu2O8+δ. Whereas low-fluence measurements reveal picosecond dynamics, sharp femtosecond dynamics emerge at higher fluence. Analyses of data as a function of energy, momentum, and doping indicate that the closure of the near-nodal gap and disruption of macroscopic coherence are primary mechanisms driving this onset. The results demonstrate the important influence of transient electronic structure on relaxation dynamics, which is relevant for developing an understanding of nonequilibrium phase transitions.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 6 October 2014
  • Revised 14 September 2015

DOI:https://doi.org/10.1103/PhysRevB.92.161102

©2015 American Physical Society

Authors & Affiliations

Christopher L. Smallwood1,2,*, Wentao Zhang1,2, Tristan L. Miller1,2, Gregory Affeldt1,2, Koshi Kurashima3, Chris Jozwiak4, Takashi Noji3, Yoji Koike3, Hiroshi Eisaki5, Dung-Hai Lee1,2, Robert A. Kaindl1, and Alessandra Lanzara1,2,†

  • 1Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 2Department of Physics, University of California, Berkeley, California 94720, USA
  • 3Department of Applied Physics, Tohoku University, Sendai 980-8579, Japan
  • 4Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 5Electronics and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan

  • *Present address: JILA, University of Colorado and National Institute of Standards and Technology, Boulder, CO 80309, USA; Email: chris.smallwood@colorado.edu
  • Email: alanzara@lbl.gov

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 92, Iss. 16 — 15 October 2015

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×