Orbital Paramagnetism of Electrons in Proximity to a Superconductor

Christoph Bruder; Yoseph Imry

doi:10.1103/PhysRevLett.80.5782

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Orbital Paramagnetism of Electrons in Proximity to a Superconductor

Christoph Bruder, Yoseph Imry

DOI 10.1103/PhysRevLett.80.5782 · Physical Review Letters

T1

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Abstract

We consider the magnetic response of a normal layer ( N) coating a superconducting cylinder ( S). The diamagnetic response of the normal layer (proximity effect) is related to the formation of Andreev levels. At low energies, the density of such states goes linearly to zero which enhances the various scattering mean-free paths. As a consequence, the low-energy glancing states, which can skip along the outer boundary, can have relatively large magnetic moments that lead to a low-temperature paramagnetic correction to the Meissner result.

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
Ta Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown