Subgap features due to quasiparticle tunneling in quantum dots coupled to superconducting leads

URN to cite this document:: urn:nbn:de:bvb:355-epub-282245
DOI to cite this document:: 10.5283/epub.28224

Pfaller, Sebastian ; Donarini, Andrea ; Grifoni, Milena

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Date of publication of this fulltext: 22 May 2013 14:07

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Abstract

We present a microscopic theory of transport through quantum dot setups coupled to superconducting leads. We derive a master equation for the reduced density matrix to lowest order in the tunneling Hamiltonian and focus on quasiparticle tunneling. For high enough temperatures transport occurs in the subgap region due to thermally excited quasiparticles, which can be used to observe excited states ...