%0 Journal Article
%T Temperature dependence of Andreev spectra in a superconducting carbon nanotube quantum dot
%A A. Kumar
%A M. Gaim
%A D. Steininger
%A A. Levy Yeyati
%A A. Martin-Rodero
%A A. K. Huettel
%A C. Strunk
%J Physics
%D 2013
%I arXiv
%R 10.1103/PhysRevB.89.075428
%X Tunneling spectroscopy of a Nb coupled carbon nanotube quantum dot reveals the formation of pairs of Andreev bound states (ABS) within the superconducting gap. A weak replica of the lower ABS is found, which is generated by quasi-particle tunnelling from the ABS to the Al tunnel probe. An inversion of the ABS-dispersion is observed at elevated temperatures, which signals the thermal occupation of the upper ABS. Our experimental findings are well supported by model calculations based on the superconducting Anderson model.
%U http://arxiv.org/abs/1308.1020v3