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arXiv · 2408.13584

Stability limits in two-band superconductor rings

Leonardo R. Cadorim·Edson Sardella·Daniel Domínguez·Jorge Berger
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Abstract

This study explores transitions between states with different winding number in two-band superconducting rings. From the time-dependent Ginzburg-Landau (TDGL) equations for two-component superconductors, we apply linear instability theory and develop a semi-analytical method that provides the critical flux for phase-slip occurrence. The developed method was applied to investigate how the critical flux depends on physical properties, such as band parameters and temperature. Finally, we show the possible existence of a soliton state, in which the phase winding number is different in each condensate.

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Leonardo R. Cadorim, Edson Sardella, Daniel Domínguez, Jorge Berger. 2024-08-24. Stability limits in two-band superconductor rings. https://arxiv.org/abs/2408.13584

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