Quasi-2D behavior in bulk isotropic type-II superconductors: Shape effects

F. Hellman; E. M. Gyorgy; R. C. Dynes

doi:10.1103/PhysRevLett.68.867

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Quasi-2D behavior in bulk isotropic type-II superconductors: Shape effects

F. Hellman, E. M. Gyorgy, R. C. Dynes

DOI 10.1103/PhysRevLett.68.867 · Physical Review Letters

T1

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Abstract

The induced magnetization of an isotropic type-II superconductor with an anisotropic sample shape has been measured in an oblique magnetic field and separated into its reversible and irreversible contributions. The measurements unexpectedly show that the irreversible magnetization is oriented essentially parallel to the smallest sample dimension, and is almost independent of the angle of the applied field. This behavior can be understood by considering the critical-state model when the applied field is at an arbitrary direction with respect to the sample axes.

Source-reported materials — not catalogue approval

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