Direct observation of non-local effects in a superconductor

Abstract

We have used the technique of low energy muon spin rotation to measure the local magnetic field profile B(z) beneath the surface of a lead film maintained in the Meissner state (z depth from the surface, z <= 200 nm). The data unambiguously show that B(z) clearly deviates from an exponential law and represent the first direct, model independent proof for a non-local response in a superconductor.

arXiv comment5 pages, 3 figures

References in corpus (4)

• Spin-polarized muons in condensed matter physics
• Nonlocal Effects on the Magnetic Penetration Depth in d-wave Superconductors
• Field Induced Reduction of the Low Temperature Superfluid Density in YBa2Cu3O6.95
• Effective "Penetration Depth" in the Vortex State of a d-wave Superconductor

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