Thermally induced subgap features in the cotunneling spectroscopy of a carbon nanotube

URN to cite this document:: urn:nbn:de:bvb:355-epub-313997
DOI to cite this document:: 10.5283/epub.31399

Ratz, Sascha ; Donarini, Andrea ; Steininger, Daniel ; Geiger, Thomas ; Kumar, Amit ; Hüttel, Andreas K.

; Strunk, Christoph ; Grifoni, Milena

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Date of publication of this fulltext: 09 Mar 2015 07:21

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Abstract

We report on the nonlinear cotunneling spectroscopy of a carbon nanotube quantum dot coupled to Nb superconducting contacts. Our measurements show rich subgap features in the stability diagram which become more pronounced as the temperature is increased. Applying a transport theory based on the Liouville-von Neumann equation for the density matrix, we show that the transport properties can be ...