Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2001-02-12
Europhys. Lett. 55 (2001) 847
Physics
Condensed Matter
Strongly Correlated Electrons
7 pages, 7 figures
Scientific paper
10.1209/epl/i2001-00358-9
We study theoretically the out of plane optical conductivity of d-wave superconductors in the presence of impurities at T=0K. Unlike the usual approach, we assume that the interlayer quasi-particle transport is due to coherent tunneling. The present model describes the T^2 dependence of the out of plane superfluid density observed in YBCO and Tl2201 for example. In the optical conductivity there is no Drude peak in agreement with experiment, and the interlayer Josephson tunneling is also assured in this model. In the unitary limit we predict a step like behaviour around omega=Delta in both the real and imaginary part of the optical conductivity.
Dóra Balázs
Maki Kazumi
Virosztek Attila
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