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Vortex state in a two-condensate superconducting film considering a topological coupling

Modern Physics Letters B, ISSN: 0217-9849, Vol: 37, Issue: 8
2023
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Article Description

In this work, we studied the magnetization and the Cooper pairs density in a conventional superconducting thin square film in the presence of an external magnetic field H. Our investigation was carried out to solve the p-wave-two-band Ginzburg-Landau equations (TB-TDGL) considering a topological-type coupling between the bands. We vary the size of the sample L, the weighty of the coupling γ and the effective Ginzburg-Landau parameter κeff, as a magnetic field function. We found an interesting vortex configuration and the respective generation of vortex clusters due to the coupling used between condensates. A high (weak) dependence of the first (second) critical field on the weight of the coupling is found. We revealed interesting magnetization curves, their dependence with the size of the sample, the relationship with the coherence length and penetration length and finally with the weight of the coupling between the bands (γ).

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