https://doi.org/10.1051/epjconf/20147501002
Quantum interference effects in [Co/Bi]n thin films
1 Dept. of Computer Engineering & Informatics, University of Patras, 26504 Rion Patras, Greece
2 Institute of Materials Science, NCSR Demokritos, 15310 Aghia Paraskevi, Athens, Greece
Published online: 3 July 2014
Magnetoconductivity (MC), Δσ(Β), and Hall coefficient, RH(B), measurements have been performed in polycrystalline thin films of Bi(15nm), Bi(10nm)/Co(1nm)/Bi(10nm) trilayer and [Co(0.7nm)/Bi(2nm)]10 multilayer, grown by magnetron scattering. The temperature dependence of RH(B) curves reveal the existence of a second conduction channel below 250K, that can be assigned to surface states. MC measurements between ±0.4T show at 5K an interplay between weak-antilocalization (WAL) in Bi and Bi/Co/Bi films and weal-localization (WL) in [Co/Bi]10 multilayer.
© Owned by the authors, published by EDP Sciences, 2014
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