Kuerbanjiang, Balati orcid.org/0000-0001-6446-8209, Nedelkoski, Zlatko, Kepaptsoglou, Demie et al. (11 more authors) (2016) The role of chemical structure on the magnetic and electronic properties of Co2FeAl0.5Si0.5/Si(111) interface. Applied Physics Letters. 172412. ISSN 0003-6951
Abstract
We show that Co2FeAl0.5Si0.5 film deposited on Si(111) has a single crystal structure and twin related epitaxial relationship with the substrate. Sub-nanometer electron energy loss spectroscopy shows that in a narrow interface region there is a mutual inter-diffusion dominated by Si and Co. Atomic resolution aberration-corrected scanning transmission electron microscopy reveals that the film has B2 ordering. The film lattice structure is unaltered even at the interface due to the substitu- tional nature of the intermixing. First-principles calculations performed using structural models based on the aberration corrected electron microscopy show that the increased Si incorporation in the film leads to a gradual decrease of the magnetic moment as well as significant spin-polarization reduction. These effects can have significant detrimental role on the spin injection from the Co2FeAl0.5Si0.5 film into the Si substrate, besides the structural integrity of this junction.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016, The author(s) |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) The University of York > Faculty of Sciences (York) > Electronic Engineering (York) |
Funding Information: | Funder Grant number EPSRC EP/K03278X/1 |
Depositing User: | Pure (York) |
Date Deposited: | 19 May 2016 13:48 |
Last Modified: | 24 Jan 2025 00:06 |
Published Version: | https://doi.org/10.1063/1.4948466 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1063/1.4948466 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:99937 |