Asymmetry of magnetic-field profiles in superconducting strips

G. P. Mikitik; E. H. Brandt

doi:10.1103/PhysRevB.72.064506

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Asymmetry of magnetic-field profiles in superconducting strips

G. P. Mikitik, E. H. Brandt

DOI 10.1103/PhysRevB.72.064506 · Physical Review B

T1

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Abstract

We analyze the magnetic-field profiles Hz(x) at the upper (lower) surface of a superconducting strip in an external magnetic field, with z perpendicular to the plane of the strip and x along its width. The external magnetic field Ha is perpendicular or inclined to the plane of the strip. We show that an asymmetry of the profiles Hz(x) appears in an oblique magnetic field Ha and also in the case when the angular dependence of the critical current density jc in the superconductor is not symmetric relative to the z axis. The asymmetry of the profiles is related to the difference ΔHz(x) of the magnetic fields at the upper and lower surfaces of the strip, which we calculate. Measurement of this difference or, equivalently, of the asymmetry of the profiles can be used as a new tool for investigation of flux-line pinning in superconductors.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Nb3Sn Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown