Critical current in type-II superconductors near the order-disorder transition

I. M. Babich; E. H. Brandt; G. P. Mikitik; E. Zeldov

doi:10.1103/PhysRevB.81.054517

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Critical current in type-II superconductors near the order-disorder transition

I. M. Babich, E. H. Brandt, G. P. Mikitik, E. Zeldov

DOI 10.1103/PhysRevB.81.054517 · Physical Review B

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Abstract

We investigate theoretically the critical states in a long thin superconducting strip with a critical transport current and in a perpendicular magnetic field, which is close to the field of the order-disorder transition in the vortex lattice. In this investigation, the metastable disordered states and the self-magnetic-field of the current are taken into account. Using the obtained results, the dependence of the dc critical current in the strip on the applied magnetic field is found near the order-disorder transition. This dependence can be used to describe the peak effect in low-Tc superconductors and the second magnetization peak in high-Tc superconductors, which occur near this transition.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown