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Vortex Structure of HTSC in an Inhomogeneous Magnetic Field

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Abstract

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.

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Funding

This work was supported by the Russian Scientific Foundation, project no. 17-19-01527.

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Authors and Affiliations

  1. National Research Nuclear University MEPhI, Moscow, Russia

    A. N. Maksimova, V. A. Kashurnikov, A. N. Moroz & I. A. Rudnev

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  1. A. N. Maksimova
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  2. V. A. Kashurnikov
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  3. A. N. Moroz
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  4. I. A. Rudnev
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Correspondence to A. N. Maksimova.

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Translated by Yu. Ryzhkov

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Maksimova, A.N., Kashurnikov, V.A., Moroz, A.N. et al. Vortex Structure of HTSC in an Inhomogeneous Magnetic Field. Phys. Solid State 63, 728–737 (2021). https://doi.org/10.1134/S1063783421050115

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