Influence of the deGennes extrapolation parameter on the resistive state of a superconducting strip

Author(s)

Barba-Ortega, J. ^[1] ; Sardella, Edson ^[2] ; Zadorosny, R. ^[3]

Affiliation

^[1] Univ Nacl Colombia, Dept Fis, Grp Fis Mesoscop, Bogota - Colombia

^[2] Univ Estadual Paulista UNESP, Fac Ciencias, Dept Fis, Caixa Postal 473, BR-17033360 Bauru, SP - Brazil

^[3] Univ Estadual Paulista UNESP, Fac Engn Ilha Solteira, Dept Fis & Quim, Caixa Postal 31, BR-15385000 Ilha Solteira, SP - Brazil

• Document type: Journal article
• Source: Physics Letters A; v. 382, n. 4, p. 215-219, JAN 30 2018.
• Web of Science Citations: 9

Abstract

We studied the resistive state of a mesoscopic superconducting strip (bridge) at zero external applied magnetic field under a transport electric current, J(a), subjected to different types of boundary conditions. The current is applied through a metallic contact (electrode) and the boundary conditions are simulated via the deGennes extrapolation length b. It will be shown that the characteristic current-voltage curve follows a scaling law for different values of b. We also show that the value of Ja at which the first vortex-antivortex (V-Av) pair penetrates the sample, as well as their average velocities and dynamics, strongly depend on the b values. Our investigation was carried out by solving the two-dimensional generalized time dependent Ginzburg-Landau (GTDGL) equation. (C) 2017 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 16/12390-6 - Macro and mesoscopic superconductivity: synthesis of ceramic materials and computational simulations based on the TDGL theory
• Grantee: Rafael Zadorosny
• Support Opportunities: Regular Research Grants
• FAPESP's process: 12/04388-0 - Tridimensional simulations of the demagnetization effects in nanostructured superconducting films
• Grantee: Edson Sardella
• Support Opportunities: Regular Research Grants