Wiedemann–Franz law in proximity bilayers

Takehito Yokoyama, Yukio Tanaka, Alexandre Avraamovitch Golubov, Jun-ichiro Inoue, Yasuhiro Asano

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Wiedemann-Franz law in the diffusive normal metal/insulator/d-wave superconductor junctions is studied for various transparency of the insulating barrier and various misorientation angles between the normal to the interface and the crystal axis of d-wave superconductors. Contrary to the conductance, the thermal conductance of the junctions does not depend seriously on the misorientation angle α of the junctions. Reflecting the formation of the midgap Andreev resonant states at the junction interface, the temperature dependence of the Lorentz ratio depends drastically on α for low transparent junctions.
Original languageEnglish
Pages (from-to)1398-1400
JournalJournal of physics and chemistry of solids
Issue number8-9
Publication statusPublished - 2005


  • IR-77633


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