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
A. Suter;E. Morenzoni;R. Khasanov;H. Luetkens;T. Prokscha;N. Garifianov
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
A. Suter;E. Morenzoni;R. Khasanov;H. Luetkens;T. Prokscha;N. Garifianov

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我们用低能μ子自旋旋转技术测量了保持在迈斯纳态(离表面z深度小于200 nm)的铅膜表面下的局部磁场分布B(z)。这些数据明确地表明,B(z)明显偏离指数律,并代表了第一个直接的,模型无关的超导体中的非局部响应的证据。
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.