期刊
PHYSICAL REVIEW B
卷 72, 期 6, 页码 -出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevB.72.060510
关键词
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We report ultrafast measurements of the transient terahertz conductivity in the high-T-C superconductor Bi2Sr2CaCu2O8+delta. 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.
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