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SM ISO690:2012 BOGUSH, Igor, FOMIN, Vladimir. Topological defects in open superconducting nanotubes after gradual and abrupt switching of the transport current and magnetic field. In: Physical Review B, 2022, vol. 105, p. 0. ISSN 2469-9950. DOI: https://doi.org/10.1103/PhysRevB.105.094511 |
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Physical Review B | |||||
Volumul 105 / 2022 / ISSN 2469-9950 /ISSNe 2469-9969 | |||||
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DOI: https://doi.org/10.1103/PhysRevB.105.094511 | |||||
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We analyze dynamics of the order parameter in superconductor 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. A 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 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 superconductor open nanotubes. |
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Cuvinte-cheie Current voltage characteristics, Magnetic fields, Superconducting materials, Vortex flow |
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