Theory of Enhanced Interlayer Tunneling in Optically Driven High-T_{c} Superconductors.

  title={Theory of Enhanced Interlayer Tunneling in Optically Driven High-T\_\{c\} Superconductors.},
  author={Junichi Okamoto and Andrea Cavalleri and Ludwig Mathey},
  journal={Physical review letters},
  volume={117 22},
Motivated by recent pump-probe experiments indicating enhanced coherent c-axis transport in underdoped YBCO, we study Josephson junctions periodically driven by optical pulses. We propose a mechanism for this observation by demonstrating that a parametrically driven Josephson junction shows an enhanced imaginary part of the low-frequency conductivity when the driving frequency is above the plasma frequency, implying an effectively enhanced Josephson coupling. We generalize this analysis to a… 

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