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Direct Observation of Nonlocal Effects in a Superconductor

A. Suter, E. Morenzoni, R. Khasanov, H. Luetkens, T. Prokscha, N. Garifianov

DOI 10.1103/PhysRevLett.92.087001 · Physical Review Letters

T1

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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 nonlocal response in a superconductor.

Source-reported materials — not catalogue approval

FormulaReported Tc (K)Pressure (GPa)Type
Pb

Archive — visibility unverified

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7.21Pressure not reportedunknown
Pb

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Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

7.21Pressure not reportedunknown
YBa2Cu3O7-δ

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Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

87.5Pressure not reportedunknown
YBa2Cu3O6.95

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Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

—Pressure not reportedunknown

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