Influence of optically quenched superconductivity on quasiparticle relaxation rates in Bi2Sr2CaCu2 O8+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, Alessandra Lanzara

研究成果: Article査読

13 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号161102
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
92
16
DOI
出版ステータスPublished - 2015 10 6

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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