Topological defects in superconducting open nanotubes under gradual and abrupt switch-on of the transport current and magnetic field

Igor Bogush; Vladimir M. Fomin

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arXiv · 2110.12745

Topological defects in superconducting open nanotubes under gradual and abrupt switch-on of the transport current and magnetic field

Igor Bogush·Vladimir M. Fomin

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Abstract

We analyze the dynamics of the order parameter in superconducting open nanotubes under a strong transport current in an external homogeneous magnetic field using the time-dependent Ginzburg-Landau equation. Near the critical transport current, the dissipation processes are driven by vortex and phase slip dynamics. The transition between the vortex and phase-slip regimes is found to depend on the external magnetic field only weakly if the magnetic field and/or the transport current are switched on gradually. In the case of an abrupt switch-on of the magnetic field or transport current, the system can be triggered to the stable phase-slip regime, within a certain window of parameters. Finally, a hysteresis effect in the current-voltage characteristics is predicted in superconducting open nanotubes.

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Igor Bogush, Vladimir M. Fomin. 2021-10-25. Topological defects in superconducting open nanotubes under gradual and abrupt switch-on of the transport current and magnetic field. https://arxiv.org/abs/2110.12745

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