Magnetic flux pinning in superconductors with hyperbolic-tessellation arrays of pinning sites
Copyright policy )Magnetic flux pinning in superconductors with hyperbolic-tessellation arrays of pinning sites
We study magnetic flux interacting with arrays of pinning sites (APS) placed on vertices of hyperbolic tesselations (HT). We show that, due to the gradient in the density of pinning sites, HT APS are capable of trapping vortices for a broad range of applied magnetic fluxes. Thus, the penetration of magnetic field in HT APS is essentially different from the usual scenario predicted by the Bean model. We demonstrate that, due to the enhanced asymmetry of the surface barrier for vortex entry and exit, this HT APS could be used as a "capacitor" to store magnetic flux.
7 pages, 5 figures
- RIKEN Japan
- RIKEN Japan
- University of Michigan–Flint United States
- Physics Department United States
- Riken Japan
Superconductivity (cond-mat.supr-con), Physics, Condensed Matter - Superconductivity, FOS: Physical sciences
Superconductivity (cond-mat.supr-con), Physics, Condensed Matter - Superconductivity, FOS: Physical sciences
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