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Nonequilibrium THz Conductivity of Bi2Sr2CaCu2O8+d

  • Author(s): Carnahan, M.A.
  • Kaindl, R.A.
  • Orenstein, J.
  • Chemla, D.S.
  • Oh, S.
  • Eckstein, J.N.
  • et al.
Abstract

Using high sensitivity visible-pump/THz-probe spectroscopy we investigate the dynamics of the complex optical conductivity in optimally-doped Bi2Sr2CaCu2O8+d films directly after photoexcitation. The photoinduced change in the imaginary part, indicative of a reduction in the superconducting condensate density, saturates at higher laser-fluences and shows a complete destruction of the condensate.

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