Temperature dependence of Andreev spectra in a superconducting carbon nanotube quantum dot

Autor:	Andreas K. Hüttel, C. Strunk, M. Gaim, D. Steininger, A. Martín-Rodero, A. Levy Yeyati, Amit Kumar
Přispěvatelé:	UAM. Departamento de Física Teórica de la Materia Condensada
Rok vydání:	2014
Předmět:	FOS: Physical sciences 02 engineering and technology 01 natural sciences Spectral line symbols.namesake Computer Science::Computational Engineering Finance and Science Condensed Matter::Superconductivity Quantum mechanics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences 010306 general physics Spectroscopy Physics Superconductivity Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Superconducting Anderson model Física Coulomb blockade Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology Condensed Matter Physics 3. Good health Electronic Optical and Magnetic Materials Computer Science::Multiagent Systems Carbon nanotube quantum dot Single electron tunneling symbols Noether's theorem 0210 nano-technology
Zdroj:	Physical Review B Biblos-e Archivo. Repositorio Institucional de la UAM instname
ISSN:	1550-235X 1098-0121
Popis:	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. Comment: 6 pages, 7 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8617492eb5232da44579c72cbfb4e150 https://doi.org/10.1103/physrevb.89.075428 Zobrazit plný text záznamu