期刊
PHYSICAL REVIEW LETTERS
卷 102, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.087004
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资金
- Stanford's Center for Probing the Nanoscale
- NSF NSEC [0425897]
- Department of Energy [DE-AC02-76SF00515]
- US-Israel BSF
- Israel Ministry of Science
- Direct For Mathematical & Physical Scien
- Division Of Physics [0425897] Funding Source: National Science Foundation
Measurements of the polar Kerr effect using a zero-area-loop Sagnac magnetometer on Pb/Ni and Al/(Co-Pd) proximity-effect bilayers show unambiguous evidence for the inverse proximity effect, in which the ferromagnet induces a finite magnetization in the superconducting layer. To avoid probing the magnetic effects in the ferromagnet, the superconducting layer was prepared much thicker than the light's optical-penetration depth. The sign and size of the effect, as well as its temperature dependence agree with recent predictions by Bergeret et al. [Phys. Rev. B 69, 174504 (2004)].
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