
Proceedings Paper
Andreev bound states in superconductor/ferromagnetic junctionsFormat | Member Price | Non-Member Price |
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Paper Abstract
Assuming tunneling perpendicular to the layers, Andreev bound states are studied theoretically in atomic-scale S/F superlattices, where S is a conventional superconductor, and F is a ferromagnet. The nonmonotonic dependence of the critical current on the exchange field h in F layers is a consequence of (pi) -phase formation. The shape of the spectra of spin-splitted densities of states (DOS) depends strongly on h and on the transfer integral t between the layers; for an appropriate choice of these parameters zero-energy bound states (ZES) may appear. Considering in-plane tunneling in high-Tc S/F/S Josephson weak links with thin, ferromagnetic metal barrier, DOS is calculated assuming that the a-axes of the crystals in two S electrodes are misoriented for an angle (theta) . In the anisotropic d-wave case the number of peaks in DOS, corresponding to the Andreev bound states, can be greater than in the isotropic s-wave case. DOS strongly depends on h, (theta) , and on the macroscopic phase difference (phi) across the link.
Paper Details
Date Published: 6 September 2000
PDF: 10 pages
Proc. SPIE 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV, (6 September 2000); doi: 10.1117/12.397827
Published in SPIE Proceedings Vol. 4058:
Superconducting and Related Oxides: Physics and Nanoengineering IV
Davor Pavuna; Ivan Bozovic, Editor(s)
PDF: 10 pages
Proc. SPIE 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV, (6 September 2000); doi: 10.1117/12.397827
Show Author Affiliations
Ljiljana Dobrosavljevic-Grujic, Institute of Physics (Serbia)
Zoran Radovic, Univ. of Belgrade (Serbia)
Zoran Radovic, Univ. of Belgrade (Serbia)
Vesna Prokic, Univ. of Belgrade (Serbia)
R. Zikic, Institute of Physics (FR Yugoslavia)
R. Zikic, Institute of Physics (FR Yugoslavia)
Published in SPIE Proceedings Vol. 4058:
Superconducting and Related Oxides: Physics and Nanoengineering IV
Davor Pavuna; Ivan Bozovic, Editor(s)
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