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Ultrafast Phonon and Quasiparticle Dynamics in Superconducting YBa2Cu3O7-δ Studied by Multi-THz Spectroscopy

M. Porer, A. Pashkin, M. Beyer, K. W. Kim, C. Bernhard, X. Yao, Y. Dagan, R. Hackl, A. Erb, J. Demsar, A. Leitenstorfer, and R. Huber

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Abstract

We probe the mid-infrared dielectric response of optimally doped YBa2Cu3O7−δ after 12-fs optical excitation to simultaneously trace quasiparticles and specific lattice modes. Our results identify an extremely non-thermal regime and highly selective electron-phonon coupling.

© 2010 Optical Society of America

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