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Coherent dynamics of confinement-induced multiband superconductors

Title data

Croitoru, Mikhail D. ; Zachmann, Martin ; Vagov, Alexei ; Axt, Vollrath M. ; Shanenko, A. A. ; Kettmann, P. ; Papenkort, Thomas ; Kuhn, Tilmann:
Coherent dynamics of confinement-induced multiband superconductors.
In: Physica C: Superconductivity and its Applications. Vol. 503 (2014) . - pp. 183-186.
ISSN 0921-4534
DOI: https://doi.org/10.1016/j.physc.2014.04.014

Project information

Project financing: Supported by the Back to Belgium Grant of the federal Science Policy (BELSPO)

Abstract in another language

Abstract We study the coherent dynamics of pairing in a nanoscale superconductor, that is intrinsically multiband, after an external perturbation in the non-adiabatic regime. The description of the dynamics of the pairing order is within the density-matrix approach based on the BCS model and the Bogoliubov–de Gennes equations. We find that for certain resonant wire widths the superconducting order parameter exhibits two oscillatory frequencies which are determined by the long-time asymptotic values of the subgaps. This in turn leads to a pronounced beating phenomenon.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Multiband superconductivity; Dynamics; Nanoscale; BCS; Bogoliubov–de Gennes equations; non-adiabatic regime; density-matrix approach
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 03 Nov 2017 07:42
Last Modified: 03 Nov 2017 07:42
URI: https://eref.uni-bayreuth.de/id/eprint/40259