Gaass, M. and Pfaller, S. and Geiger, T. and Donarini, A. and Grifoni, M. and Huettel, A. K. and Strunk, Ch. (2014) Subgap spectroscopy of thermally excited quasiparticles in a Nb-contacted carbon nanotube quantum dot. PHYSICAL REVIEW B, 89 (24): 241405. ISSN 1098-0121, 1550-235X
Full text not available from this repository. (Request a copy)Abstract
We present electronic transport measurements of a single wall carbon nanotube quantum dot coupled to Nb superconducting contacts. For temperatures comparable to the superconducting gap, peculiar transport features are observed inside the Coulomb blockade and superconducting energy gap regions. The observed temperature dependence can be explained in terms of sequential tunneling processes involving thermally excited quasiparticles. In particular, these channels give rise to two unusual conductance peaks at zero bias in the vicinity of the charge degeneracy point and allow one to determine the degeneracy of the ground states involved in transport. The measurements are in good agreement with model calculations.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ANDREEV BOUND-STATES; TRANSPORT; SUPERCONDUCTOR; REGIME; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Oct 2019 09:01 |
| Last Modified: | 28 Oct 2019 09:01 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10026 |
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