Topological defects in open superconducting nanotubes after gradual and abrupt switching of the transport current and magnetic field
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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

Topological defects in open superconducting nanotubes after gradual and abrupt switching of the transport current and magnetic field

DOI: https://doi.org/10.1103/PhysRevB.105.094511

Pag. 0-0

Bogush Igor123, Fomin Vladimir134
 
1 Institute for Integrative Nanosciences,
2 Lomonosov Moscow State University,
3 Moldova State University,
4 National Research Nuclear University MEPhI, Moscow
 
Disponibil în IBN: 21 aprilie 2022


Rezumat

 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. 

Cuvinte-cheie
Current voltage characteristics, Magnetic fields, Superconducting materials, Vortex flow