Temperature dependence of Andreev spectra in a superconducting carbon nanotube quantum dot
Entity
UAM. Departamento de Física Teórica de la Materia CondensadaPublisher
American Physical SocietyDate
2014-02-24Citation
10.1103/PhysRevB.89.075428
Physical Review B 89.7 (2014): 075428
ISSN
1098-0121 (print); 1550-235X (online)DOI
10.1103/PhysRevB.89.075428Funded by
We gratefully acknowledge financial support from the Deutsche Forschungsgemeinschaft within GRK 1570, SFB 689, the E. Noether program (Hu 1808-1), from Spanish MINECO through grant FIS2011-26516, and from the EU FP7 Project SE2ND. from the EU FP7 Project SE2ND. A. K. thanks the Alexander von Humboldt Foundation for providing - nancial support during this researchProject
info:eu-repo/grantAgreement/EC/FP7/271554; Gobierno de España. FIS2011-26516Editor's Version
http://dx.doi.org/10.1103/PhysRevB.89.075428Subjects
Spectroscopy; Superconducting Anderson model; FísicaRights
© 2014 American Physical SocietyAbstract
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
Files in this item
Google Scholar:Kumar, A.
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Gaim, M.
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Steininger, D.
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Levy-Yeyati Mizrahi, Alfredo
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Martín-Rodero, A.
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Hüttel, A. K.
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Strunk, C.
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