Onset of superconductivity in a voltage-biased normal-superconducting-normal microbridge

M. Serbyn, M. Skvortsov, Physical Review B - Condensed Matter and Materials Physics 87 (2013).


Journal Article | Published
Author
Serbyn, MaksymIST Austria ; Skvortsov, Mikhail A
Abstract
We study the stability of the normal state in a mesoscopic NSN junction biased by a constant voltage V with respect to the formation of the superconducting order. Using the linearized time-dependent Ginzburg-Landau equation, we obtain the temperature dependence of the instability line, V inst(T), where nucleation of superconductivity takes place. For sufficiently low biases, a stationary symmetric superconducting state emerges below the instability line. For higher biases, the normal phase is destroyed by the formation of a nonstationary bimodal state with two superconducting nuclei localized near the opposite terminals. The low-temperature and large-voltage behavior of the instability line is highly sensitive to the details of the inelastic relaxation mechanism in the wire. Therefore, experimental studies of Vinst(T) in NSN junctions may be used as an effective tool to access the parameters of the inelastic relaxation in the normal state.
Publishing Year
Date Published
2013-01-02
Journal Title
Physical Review B - Condensed Matter and Materials Physics
Acknowledgement
We are grateful to M. V. Feigel'man, A. Kamenev, T. M. Klapwijk, J. P. Pekola, V. V. Ryazanov, J. C. W. Song, and D. Y. Vodolazov for discussions.
Volume
87
Issue
2
IST-REx-ID
971

Cite this

Serbyn M, Skvortsov M. Onset of superconductivity in a voltage-biased normal-superconducting-normal microbridge. Physical Review B - Condensed Matter and Materials Physics. 2013;87(2). doi:10.1103/PhysRevB.87.020501
Serbyn, M., & Skvortsov, M. (2013). Onset of superconductivity in a voltage-biased normal-superconducting-normal microbridge. Physical Review B - Condensed Matter and Materials Physics, 87(2). https://doi.org/10.1103/PhysRevB.87.020501
Serbyn, Maksym, and Mikhail Skvortsov. “Onset of Superconductivity in a Voltage-Biased Normal-Superconducting-Normal Microbridge.” Physical Review B - Condensed Matter and Materials Physics 87, no. 2 (2013). https://doi.org/10.1103/PhysRevB.87.020501.
M. Serbyn and M. Skvortsov, “Onset of superconductivity in a voltage-biased normal-superconducting-normal microbridge,” Physical Review B - Condensed Matter and Materials Physics, vol. 87, no. 2, 2013.
Serbyn M, Skvortsov M. 2013. Onset of superconductivity in a voltage-biased normal-superconducting-normal microbridge. Physical Review B - Condensed Matter and Materials Physics. 87(2).
Serbyn, Maksym, and Mikhail Skvortsov. “Onset of Superconductivity in a Voltage-Biased Normal-Superconducting-Normal Microbridge.” Physical Review B - Condensed Matter and Materials Physics, vol. 87, no. 2, American Physical Society, 2013, doi:10.1103/PhysRevB.87.020501.
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