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VOLUME 81 (2005) | ISSUE 4 |
PAGE 217
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Density of states anomalies in hybrid superconductor-ferromagnet-normal metal structures
A. A. Golubov*, M. Yu. Kupriyanov+ 1), M. Siegel
*Faculty of Science and Technology, University of Twente, The Netherlands +Nuclear Physics Institute, Moscow State University, 119992 Moscow, Russia Institute for Micro and Nanoelectronic Systems, Karlsruhe University, D-76187 Karlsruhe, Germany
PACS: 74.50.+r, 74.80.Dm, 75.30.Et
Abstract
The results of calculations of the spatially-resolved density of
states (DOS) in an S(F/N) bilayer are presented (S is a
superconductor, F is a metallic ferromagnet, N is a normal metal)
within quasiclassical theory in the dirty limit. Analytical
solutions are obtained in the case of thin F, N layers which
demonstrate the peculiar features of DOS in this system. The
dependencies of the minigap and the DOS peak positions on the
exchange energy and parameters of the layers are studied
numerically.
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