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  Interface-assisted sign inversion of magnetoresistance in spin valves based on novel lanthanide quinoline molecules

Bedoya-Pinto, A., Miralles, S. G., Vélez, S., Atxabal, A., Gargiani, P., Valvidares, M., et al. (2018). Interface-assisted sign inversion of magnetoresistance in spin valves based on novel lanthanide quinoline molecules. Advanced Functional Materials, 28(16): 1702099. doi:10.1002/adfm.201702099.

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https://doi.org/10.1002/adfm.201702099 (Publisher version)
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 Creators:
Bedoya-Pinto, Amilcar1, Author              
Miralles, Sara G.2, Author
Vélez, Saül2, Author
Atxabal, Ainhoa2, Author
Gargiani, Pierluigi2, Author
Valvidares, Manuel2, Author
Casanova, Fèlix2, Author
Coronado, Eugenio2, Author
Hueso, Luis E.2, Author
Affiliations:
1Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society, ou_3287476              
2External Organizations, ou_persistent22              

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 Abstract: Molecules are proposed to be an efficient medium to host spin-polarized carriers, due to their weak spin relaxation mechanisms. While relatively long spin lifetimes are measured in molecular devices, the most promising route toward device functionalization is to use the chemical versatility of molecules to achieve a deterministic control and manipulation of the electron spin. Here, by combining magnetotransport experiments with element-specific X-ray absorption spectroscopy, this study shows the ability of molecules to modify spin-dependent properties at the interface level via metal–molecule hybridization pathways. In particular, it is described how the formation of hybrid states determines the spin polarization at the relevant spin valve interfaces, allowing the control of macroscopic device parameters such as the sign and magnitude of the magnetoresistance. These results consolidate the application of the spinterface concept in a fully functional device platform.

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 Dates: 2017-10-232018-04-18
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: P13686
DOI: 10.1002/adfm.201702099
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Title: Advanced Functional Materials
  Other : Adv. Funct. Mater.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH Verlag GmbH
Pages: - Volume / Issue: 28 (16) Sequence Number: 1702099 Start / End Page: - Identifier: ISSN: 1616-301X
CoNE: https://pure.mpg.de/cone/journals/resource/954925596563