Ratz, S. and Donarini, A. and Steininger, D. and Geiger, T. and Kumar, A. and Huettel, A. K. and Strunk, Ch and Grifoni, M. (2014) Thermally induced subgap features in the cotunneling spectroscopy of a carbon nanotube. NEW JOURNAL OF PHYSICS, 16: 123040. ISSN 1367-2630,
Full text not available from this repository. (Request a copy)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 Liouvillevon Neumann equation for the density matrix, we show that the transport properties can be attributed to processes involving sequential as well as elastic and inelastic cotunneling of quasiparticles thermally excited across the gap. In particular, we predict thermal replicas of the elastic and inelastic cotunneling peaks, in agreement with our experimental results.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SUPERCURRENT; SUPERCONDUCTIVITY; cotunneling; thermal quasiparticles; carbon nanotube; quantum dot; superconducting contacts |
| 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: | 05 Aug 2019 13:20 |
| Last Modified: | 05 Aug 2019 13:20 |
| URI: | https://pred.uni-regensburg.de/id/eprint/9045 |
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