Vortex Structure of HTSC in an Inhomogeneous Magnetic Field

The penetration of a magnetic flux into an anisotropic superconductor placed in a gradient magnetic field equivalent to a permanent magnet field is studied numerically. Vortex configurations formed in a defect-free superconductor and also in a superconductor contained defects are calculated. It is s...

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Bibliographic Details
Published in:Physics of the solid state 2021-05, Vol.63 (5), p.728-737
Main Authors: Maksimova, A. N., Kashurnikov, V. A., Moroz, A. N., Rudnev, I. A.
Format: Article
Language:English
Subjects:
Anisotropy
Magnetic fields
Magnetic flux
Magnetism
Magnetization
Magnets, Permanent
Mathematical analysis
Penetration
Permanent magnets
Physics
Physics and Astronomy
Solid State Physics
Superconductors
Vortices
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Summary:The penetration of a magnetic flux into an anisotropic superconductor placed in a gradient magnetic field equivalent to a permanent magnet field is studied numerically. Vortex configurations formed in a defect-free superconductor and also in a superconductor contained defects are calculated. It is shown that the penetration of an inhomogeneous magnetic field into a layered superconductor occurs via the formation of incomplete vortex lines at the boundary, which implies to the appearance of a magnetic field component parallel to the layers. The dependences of the magnetization and energy in magnetic field are calculated for a tree-dimensional HTSC sample and it is shown that there are minima at the energy plot corresponding to stable positions of a magnet with respect to the superconductor.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783421050115