Regensburg 2004 – scientific programme

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TT: Tiefe Temperaturen

TT 18: Supraleitung: Tunneln, Josephson-Kontakte, SQUIDs

TT 18.8: Talk

Wednesday, March 10, 2004, 16:15–16:30, H20

Charge-imbalance relaxation rate in layered d-wave superconductors — •Joachim Keller and Dmitri Ryndyk — Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg

Intrinsic (inter-layer) Josephson effect in layered d-wave superconductors is accompanied by static and oscillating charge fluctuations on the layers. In a system of weakly coupled very thin atomic layers, such charge fluctuations may lead to non-equilibrium effects described by a shift of the chemical potential of the condensate and a charge imbalance between electron- and hole-like quasiparticles. We have developed the microscopic theory based on the nonequilibrium Green function method and calculated static and high-frequency charge imbalance relaxation rates in d-wave superconductors (which are determined at low temperatures by elastic scattering).

16:30 Pause