Andreev experiments on superconductor/ferromagnet point contacts

Физика Низких Температур: Том 39, Выпуск 3 (Март 2013), c. 354-359 ( к оглавлению , назад )

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

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.

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