Simulation of dynamics of the order parameter in superconducting nanostructured materials: Effect of the magnetic field renormalization

Smirnova, E. I.; Rezaev, R. O.; Fomin, V. M.

doi:10.1063/10.0000862

Cited by 9 publications

(4 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This experimental concept can be used for efficient cooling of the superconductor and would then allow for higher current flows through the structure without overheating effects (Supplementary Note 1). The effects of the induced magnetic field are considered to be negligible 26…”

Section: Resultsmentioning

confidence: 99%

Topological transitions in superconductor nanomembranes under a strong transport current

et al. 2020

Self Cite

View full text Add to dashboard Cite

The topological defects, vortices in bulk superconductors (SCs) and phase slips in lowdimensional SCs are known to lead to the occurrence of a finite resistance. We report on a topological transition between the both types of topological defects under a strong transport current in an open SC nanotube with a submicron-scale inhomogeneity of the normal-to-thesurface component of the applied magnetic field. When the magnetic field is orthogonal to the axis of the nanotube, which carries the transport current in the azimuthal direction, the phase-slip regime is characterized by the vortex/antivortex lifetime ∼ 10 −14 s versus the vortex lifetime ∼ 10 −11 s for vortex chains in the half-tubes, and the induced voltage shows a pulse as a function of the magnetic field. The topological transition between the vortex-chain and phase-slip regimes determines the magnetic-field-voltage and current-voltage characteristics of curved SC nanomembranes to pursue high-performance applications in advanced electronics and quantum computing.

show abstract

Section: Resultsmentioning

confidence: 99%

Topological transitions in superconductor nanomembranes under a strong transport current

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…The smallness of the effects of the induced magnetization and the tangent component of the magnetic field for Nb (κ = 4.7) C-shaped microdevice was demonstrated in Ref. [48].…”

Section: Modelmentioning

confidence: 93%

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

Bogush¹,

Fomin²

2021

Preprint

View full text Add to dashboard Cite

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.

show abstract

“…The smallness of the effects of the induced magnetization and the tangential component of the magnetic field for Nb (

\kappa = 4.7

) C‐shaped microdevice has been demonstrated in ref. [39]. See ref.…”

Section: Modelmentioning

confidence: 99%

Optimization of the Hysteresis Effect in Superconductor Nb Open Nanotubes

Bogush

Fomin

2023

Physica Rapid Research Ltrs

Self Cite

View full text Add to dashboard Cite

Superconductor Nb open nanotubes are analyzed under a strong transport current in an external magnetic field using the time‐dependent Ginzburg–Landau equations. The geometric properties of the hysteresis loop in current–voltage characteristics are described for nanotubes of different radii from 190 to 440 nm as a function of the magnetic field. The hysteresis effect appears at a constant temperature as a result of the order parameter dynamics. In nanotubes of radii equal to 240 nm and larger, the area of the hysteresis loop manifests a non‐monotonic behavior as a function of the external magnetic field with a maximum ranging from 15 to 20 mT. Normal conductivity is shown to have a crucial impact on the hysteresis effect in superconductor open nanotubes. Namely, a higher normal conductivity leads to the disappearance of the hysteresis effect. As a rule, the upper and lower branches of the hysteresis loop are provided by the phase‐slip and vortex regimes, correspondingly. Just before the transition of the system from the upper branch to the lower one, the way of nucleation and annihilation of vortices in the region with suppressed superconductivity experiences readjustment.

show abstract

Simulation of dynamics of the order parameter in superconducting nanostructured materials: Effect of the magnetic field renormalization

Cited by 9 publications

References 30 publications

Topological transitions in superconductor nanomembranes under a strong transport current

Topological transitions in superconductor nanomembranes under a strong transport current

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

Optimization of the Hysteresis Effect in Superconductor Nb Open Nanotubes

Contact Info

Product

Resources

About