The diamagnetism of platinum metals (N: Rh, Pt, Pd), which is induced by the proximity effect of a superconductor (S: Nb), has been investigated for N-S double layers. Notwithstanding the strong spin fluctuation in platinum metals, the screening distance \rho in N increases with a decrease in temperature and reaches a value which is expected in comparison with \rho in Cu. When magnetic impurities are included in N, the proximity effect is drastically suppressed and the paramagnetism due to a giant moment is observed.
@article{arxiv.cond-mat/0308528,
title = {Proximity-induced superconductivity in platinum metals},
author = {D. Katayama and A. Sumiyama and Y. Oda},
journal= {arXiv preprint arXiv:cond-mat/0308528},
year = {2009}
}
Comments
4 pages, 4 figures, to be published in Phys. Rev. B