Direct observation of nonlocal effects in a superconductor.
Direct observation of nonlocal effects in a superconductor.
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DOI:
10.1103/physrevlett.92.087001
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发表时间:
2003-10
影响因子:
8.6
通讯作者:
A. Suter;E. Morenzoni;R. Khasanov;H. Luetkens;T. Prokscha;N. Garifianov
中科院分区:
文献类型:
--
作者:
A. Suter;E. Morenzoni;R. Khasanov;H. Luetkens;T. Prokscha;N. Garifianov
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 less, similar 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.