Direct investigations of the superconducting surface sheath and nonlocal electrodynamics by polarized neutron reflections

K. E. Gray; G.-P. Felcher; R. T. Kampwirth; R. Hilleke

doi:10.1103/PhysRevB.42.3971

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Direct investigations of the superconducting surface sheath and nonlocal electrodynamics by polarized neutron reflections

K. E. Gray, G.-P. Felcher, R. T. Kampwirth, R. Hilleke

DOI 10.1103/PhysRevB.42.3971 · Physical Review B

T1

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Abstract

Using a very direct probe of surface magnetism, i.e., polarized neutron reflections, the penetration of a magnetic field into low-κ superconductors has been shown to be inadequately quantitatively described by the local Ginzburg-Landau (GL) theory. In addition, the existence of the surface sheath of superconductivity has been clearly and directly shown by using this probe on the diamagnetic surface sheath. In this case, numerical calculations based on the local GL theory are shown to provide a useful estimate of the size of the diamagnetism.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	7.2	Pressure not reported	unknown