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Stability limits of flux states in two-band superconductor rings

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Author(s):
Cadorim, Leonardo Rodrigues ; Sardella, Edson ; Dominguez, Daniel ; Berger, Jorge
Total Authors: 4
Document type: Journal article
Source: PHYSICAL REVIEW B; v. 110, n. 14, p. 11-pg., 2024-10-15.
Abstract

This study explores transitions between states with different winding number in two-band superconducting rings. From the time-dependent Ginzburg-Landau equations for two-component superconductors, we apply linear instability theory and develop a semianalytical 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. (AU)

FAPESP's process: 20/03947-2 - Characterization of magnetic and electronic properties in mesoscopic and nanostructured multiband superconductors
Grantee:Leonardo Rodrigues Cadorim
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 12/04388-0 - Tridimensional simulations of the demagnetization effects in nanostructured superconducting films
Grantee:Edson Sardella
Support Opportunities: Regular Research Grants
FAPESP's process: 20/10058-0 - Study of the resistive state of meoscopic superconductors of finite thickness
Grantee:Edson Sardella
Support Opportunities: Regular Research Grants