Spectral characteristics of the coherent dynamics of the order parameter in superconducting nanorods

Titelangaben

Kettmann, P. ; Hannibal, S. ; Croitoru, Mikhail D. ; Vagov, Alexei ; Axt, Vollrath Martin ; Kuhn, Tilmann:
Spectral characteristics of the coherent dynamics of the order parameter in superconducting nanorods.
In: Physica C: Superconductivity and its Applications. Bd. 533 (2017) . - S. 133-136.
ISSN 0921-4534
DOI: https://doi.org/10.1016/j.physc.2016.06.005

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Abstract

Within the density-matrix formalism based on the Bogoliubov-de Gennes equations approach we investigate the dynamics of the non-equilibrium BCS pairing induced by a sudden change of the coupling constant in quasi-1D and quasi-0D samples. We demonstrate that two different dynamical regimes of the amplitude of the BCS gap can be distinguished: an initially damped oscillation in the case of short quantum wires and purely irregular dynamics in the case of nanorods.