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Authors: Lidig, Christian
Cramer, Joel
Weisshoff, Laura
Thomas, Teslin Rose
Kessler, Travis
Kläui, Mathias
Jourdan, Martin
Title: Unidirectional spin Hall magnetoresistance as a tool for probing the interfacial spin polarization of Co2MnSi
Online publication date: 28-Jan-2020
Language: english
Abstract: Many Heusler compounds are predicted to be ferromagnetic half metals in the bulk, which makes them promising compounds for spintronics. however, for devices the transport spin polarization at specific interfaces requires optimization. we show that investigations of the unidirectional magnetoresistance provide an alternative approach to access this quantity. based on a wheatstone-bridge design we probe the unidirectional magnetoresistance of co2mnsi/(ag, cu, or cr)(0.5 nm)/pt (or ta) multilayers and separate the spin-dependent unidirectional spin hall magnetoresistance from other contributions. we demonstrate that by the insertion of a thin epitaxial ag layer the spin-dependent contribution is doubled corresponding to a significant increase of the transport spin polarization, which is discussed in the framework of highly spin-polarized interface states.
DDC: 530 Physik
530 Physics
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 08 Physik, Mathematik u. Informatik
Place: Mainz
URN: urn:nbn:de:hebis:77-publ-595292
Version: Accepted version
Publication type: Zeitschriftenaufsatz
License: in Copyright
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Journal: Physical review applied
Pages or article number: Art. 044039
Publisher: American Physical Society
Publisher place: College Park, Md.
Issue date: 2019
ISSN: 2331-7019
Publisher URL:
Publisher DOI: 10.1103/PhysRevApplied.11.044039
Appears in collections:JGU-Publikationen

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