Abstract
Andreev reflection is a scattering process where electrical current is converted to supercurrent where there is an interface between a normal metal and a superconductor. Recently, much attention has been focused on Andreev reflection in nanohybrids of ferromagnet (F) and superconductor (S). This is for a variety of reasons. Andreev reflection in a F-S point contact provides a powerful tool for determining the spin polarization of conducting electrons. The coherence length of a superconductor can be estimated by measuring the tunnel magnetoresistance of a F-S-F double junction system. A novel scattering process called crossed Andreev reflection can be predicted for a superconductor with two ferromagnetic leads, where Andreev reflection occurs even if the ferromagnetic leads are half metallic. In this chapter the theory of Andreev reflection in nanohybrids of F and S is introduced, and recent progress in this field is reviewed.
Original language | English |
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Title of host publication | Concepts in Spin Electronics |
Publisher | Oxford University Press |
Pages | 1-28 |
Number of pages | 28 |
Volume | 9780198568216 |
ISBN (Electronic) | 9780191718212 |
ISBN (Print) | 9780198568216 |
DOIs | |
Publication status | Published - 2007 Sep 1 |
Keywords
- Andreev reflection
- Crossed andreev reflection
- Magnetoresistance
- Nanohybrids
- Superconductor
ASJC Scopus subject areas
- Physics and Astronomy(all)