Andreev experiments on superconductor/ferromagnet point contacts
S. Bouvron*, M. Stokmaier**, and M. Marz
Physikalisches Institut, Karlsruher Institut für Technologie (KIT), 76131 Karlsruhe, Germany
G. Goll
Physicalisches Institut and DFG-Zentrum fьr Funktionelle Nanostrukturen, Karlsruher Institut fьr Technologie (KIT), 76131 Karlsruhe, Germany
E-mail: gernot.goll@kit.edu
pos Анотація:
Received December 5, 2012
Abstract
Andreev reflection is a smart tool to investigate the spin polarization P of the current through point contacts between a superconductor and a ferromagnet. We compare different models to extract P from experimental data and investigate the dependence of P on different contact parameters.
PACS: 72.25.Ba Spin polarized transport in metals; PACS: 73.23.–b Electronic transport in mesoscopic systems; PACS: 73.63.Rt Nanoscale contacts; PACS: 74.78.Na Mesoscopic and nanoscale systems; PACS: 81.07.Lk Nanocontacts.
Key words: Andreev reflection, spin polarization, point contacts.