ISSN:
1434-6036
Keywords:
PACS. 73.23.-b Electronic transport in mesoscopic systems – 74.80.Fp Point contacts; SN and SNS junctions – 72.25.-b Spin-polarized transport
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: We present electrical transport experiments performed on submicron hybrid devices made of a ferromagnetic conductor (Co) and a superconducting (Al) electrode. The sample was patterned in order to separate the contributions of the Co conductor and of the Co-Al interface. We observed a strong influence of the Al electrode superconductivity on the resistance of the Co conductor. This effect is large only when the interface is highly transparent. We characterized the dependence of the observed resistance decrease on temperature, bias current and magnetic field. As the differential resistance of the ferromagnet exhibits a non-trivial asymmetry, we claim that the magnetic domain structure plays an important role in the electron transport properties of superconducting / ferromagnetic conductors.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1140/epjb/e2003-00014-x
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