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Nonequilibrium Superconductivity and Quasiparticle Dynamics Studied by Photoinduced Activation of mm-Wave Absorption

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Feenstra, B.J.
Schützmann, J.
Published in Physical Review Letters. 1997, vol. 79, no. 24, p. 4890-4893
Abstract We present a study of nonequilibrium superconductivity in DyBa2Cu3O7−δ using photoinduced activation of mm-wave absorption. We monitor the time evolution of the thin film transmissivity at 5cm−1 subject to pulsed infrared radiation. In addition to a positive bolometric signal we observe a second, faster, decay with a sign opposite to the bolometric signal for T>40K. We attribute this to the unusual properties of quasiparticles residing near the nodes of an unconventional superconductor, resulting in a strong enhancement of the recombination time.
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FEENSTRA, B.J. et al. Nonequilibrium Superconductivity and Quasiparticle Dynamics Studied by Photoinduced Activation of mm-Wave Absorption. In: Physical Review Letters, 1997, vol. 79, n° 24, p. 4890-4893. https://archive-ouverte.unige.ch/unige:112117

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Deposited on : 2018-12-07

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