Dynamics of Cooper pair formation in Bi2 Sr2 Ca Cu2 O8+δ

Robert A. Kaindl, Marc A. Carnahan, Daniel S. Chemla, Seongshik Oh, James N. Eckstein

Research output: Contribution to journalArticle

Abstract

We report ultrafast measurements of the transient terahertz conductivity in the high- TC superconductor Bi2 Sr2 Ca Cu2 O8+δ. After depletion of the superconducting condensate by optical excitation, the ensuing dynamics is tracked with high sensitivity at various excitation densities and temperatures. We measure low-energy spectra and shapes of decay that demonstrate a bimolecular kinetics of condensate formation on a picosecond time scale and yield a measure of quasiparticle interactions hidden in linear spectroscopy.

Original languageEnglish (US)
Article number060510
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number6
DOIs
StatePublished - Aug 1 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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