Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-04-06
Physica E 42 (2010)1010
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 3 figures
Scientific paper
10.1016/j.physe.2009.11.102
We study the Josephson transport through ferromagnetic insulators (FIs) by taking into account its band structure explicitly. In the case of the fully polarized FIs (FPFIs), we found the formation of a pi-junction and an atomic-scale 0-pi transition induced by increasing the FI thickness. More remarkably, in the Josephson junction through spin-filter materials such as Eu chalcogenides, the orbital hybridization between the conduction d and the localized f electron gives rise to the pi-junction behavior. Such FI-based pi-junctions can be used to implement highly-coherent solid-state quantum bits.
Asano Yasuhiro
Kashiwaya Satoshi
Kawabata Shiro
Tanaka Yukio
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