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arXiv · 2502.17127

Josephson vortex system in a flux-flow regime in electron doped high-Tc superconductor Nd(2-x)CexCuO4

T. B. Charikova·A. M. Bartashevich·V. N. Neverov·M. R. Popov·N. G. Shelushinina·A. A. Ivanov
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Abstract

For an epitaxial film of an electron-doped superconductor Nd(2-x)CexCuO4 (x=0.145), in a mixed state, a well-defined step structure is observed on the dependence of the c-axis flux-flow resistance on the magnetic field parralel to CuO2 layers. It is shown that in the region of a free flow of Josephson vortices, the structure is periodic with a period of deltaB~Phi0/(lambdaablambdac). It is essential that the magnetic penetration depths in the ab-plane (lambdaab) and along the c-axis (lambdac) determine the sizes of the Josephson vortices in the Lawrence-Doniach model for an anisotropic layered superconductor.

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T. B. Charikova, A. M. Bartashevich, V. N. Neverov, M. R. Popov, N. G. Shelushinina, A. A. Ivanov. 2025-02-24. Josephson vortex system in a flux-flow regime in electron doped high-Tc superconductor Nd(2-x)CexCuO4. https://arxiv.org/abs/2502.17127

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