Co-existence of the Meissner and vortex-state on a superconducting spherical shell

Abstract

We show that on superconducting spherical nanoshells, the co-existence of the Meissner state with a variety of vortex patterns drives the phase transition to higher magnetic fields. The spherical geometry leads to a Magnus-Lorentz force pushing the nucleating vortices and antivortices towards the poles, overcoming local pinning centers, preventing vortex-antivortex recombination and leading to the appearance of a Meissner belt around the sphere's equator. In sufficiently small and thin spherical shells paramagnetic vortex states can be stable, enabling spatial separation of freely moving shells with different radii and vorticity in an inhomogeneous external magnetic field.

arXiv comment11 pages, 5 figures (higher res gif version of fig.5 included in archive)

References in corpus (5)

• Nanoengineered magnetic-field-induced superconductivity
• Crystalline Order on a Sphere and the Generalized Thomson Problem
• Ratchet Cellular Automata
• Dynamics and Instabilities of Defects in Two-Dimensional Crystals on Curved Backgrounds
• Vortices on a superconducting nanoshell: phase diagram and dynamics

Cited by in corpus (6)

• Out-of-surface vortices in spherical shells
• Aharonov-Bohm oscillations in the vortex dynamics in superconducting hollow cylinders
• Effective quantum dynamics in curved thin-layer system with inhomogeneous confinement
• Curvature-Induced Skyrmion Mass
• Negative-μ regime in the ac magnetic response of superconductor nanoshells
• Quantum Vortices in Curved Geometries