Volume 45, Number 6, March II 1999
|Page(s)||707 - 713|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Local density of states in superconductor-ferromagnetic hybrid systems
Istituto di Fisica, Università di Catania -
viale A. Doria 6, I-95129 Catania, Italy
Istituto Nazionale per la Fisica della Materia (INFM),
Unità di Catania, Italy
Accepted: 14 January 1999
In this letter we discuss various properties of the local density of states (DOS) for a superconductor-ferromagnet hybrid system. The DOS is modified at small energies on both sides of the interface. Due to the interplay of superconductivity and ferromagnetism, the local DOS depends on the spin direction. The spin polarization effects extend over a long distance from the interface both in the superconductor and in the ferromagnet. If the ferromagnet is of finite length, the DOS shows a spin-dependent gap.
PACS: 74.80.Fp – Point contacts; SN and SNS junctions / 74.50.+r – Proximity effects, weak links, tunneling phenomena, and Josephson effects
© EDP Sciences, 1999
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