All-spinel oxide Josephson junctions for high-efficiency spin filtering.
Published version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Mesoraca, S
Knudde, S
Leitao, DC
Cardoso, S
Blamire, MG
Abstract
Obtaining high efficiency spin filtering at room temperature using spinel ferromagnetic tunnel barriers has been hampered by the formation of antiphase boundaries due to their difference in lattice parameters between barrier and electrodes. In this work we demonstrate the use of LiTi2O4 thin films as electrodes in an all-spinel oxide CoFe2O4-based spin filter devices. These structures show nearly perfect epitaxy maintained throughout the structure and so minimise the potential for APBs formation. The LiTi2O4 in these devices is superconducting and so measurements at low temperature have been used to explore details of the tunnelling and Josephson junction behaviour.
Description
Keywords
spintronics, oxides, thin films, superconductivity, pulsed laser deposition
Journal Title
J Phys Condens Matter
Conference Name
Journal ISSN
0953-8984
1361-648X
1361-648X
Volume Title
30
Publisher
IOP Publishing
Publisher DOI
Sponsorship
European Research Council (291442)
European Commission (316657)
European Commission (316657)