Coherent dynamics of confinement-induced multiband superconductors

Title data

Croitoru, Mikhail D. ; Zachmann, Martin ; Vagov, Alexei ; Axt, Vollrath Martin ; 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

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.