Journal
JOURNAL OF SUPERCONDUCTIVITY
Volume 17, Issue 1, Pages 143-149Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1023/B:JOSC.0000011858.63802.26
Keywords
non-equilibrium superconductivity; femtosecond time-resolved spectroscopy; terahertz spectroscopy; cuprates; MgB2
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We present studies of superconducting state recovery dynamics in superconductors probed by time-resolved optical-pump terahertz-probe spectroscopy. In these experiments femtosecond optical pulses excite the superconductor out of equilibrium, while the condensate and quasiparticle dynamics are probed by measuring the associated changes in the far-infrared conductivity as a function of time delay with respect to the excitation pulse. Recent results on MgB2 and YBa2Cu3O7 are presented, with main differences and similarities between the two pointed out and discussed.
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