Comment on "Critical cutting forces between flux vortices in a type-II superconductor"

T. Matsushita

doi:10.1103/PhysRevB.38.820

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Comment on "Critical cutting forces between flux vortices in a type-II superconductor"

T. Matsushita

DOI 10.1103/PhysRevB.38.820 · Physical Review B

T1

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Abstract

A steplike increase in the critical current density with the magnetic field was observed for a thin superconducting Pb-Tl film in a longitudinal field geometry by Blamire and Evetts Phys. Rev. B 33 5131 1986. This steplike increase corresponds to a penetration of a row of fluxoids into the superconducting film. Blamire and Evetts attributed this critical current density to the cutting threshold between the fluxoids. In this paper the author comments that the flux-pinning interaction is also a possible mechanism to explain such a steplike increase. Temperature dependences derived from the two mechanisms are compared with the experimental result. The observed dependence deviates from the prediction from the flux cutting but can be explained by the flux pinning.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Pb-Tl Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Pb64Tl36 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown