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An organic spin valve embedding a self-assembled monolayer of organic radicals
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Poggini, Lorenzo, Cucinotta, Giuseppe, Pradipto, Abdul-Muizz, Scarrozza, Marco, Barone, Paolo, Caneschi, Andrea, Graziosi, Patrizio, Calbucci, Marco, Cecchini, Raimondo, Dediu, Valentin Alek, Picozzi, Silvia, Mannini, Matteo and Sessoli, Roberta (2016) An organic spin valve embedding a self-assembled monolayer of organic radicals. Advanced Materials Interfaces, 3 (14). 1500855. doi:10.1002/admi.201500855 ISSN 2196-7350.
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Official URL: http://dx.doi.org/10.1002/admi.201500855
Abstract
A novel functionalization of a ferromagnetic electrode employed in spintronic devices is reported. Self‐assembling monolayer technique has been used to chemisorb a paramagnetic phosphonate functionalized nitronyl‐nitroxide radical (NitPO) on the ferromagnetic La0.7Sr0.3MnO3 (LSMO) manganite surface. This interfacial layer causes clearly detectable modifications of the behavior in prototypical LSMO/NitPO/Gaq3/AlOx/Co vertical spintronic devices at temperatures below the ferromagnetic alignment (estimated by density functional theory) of the magnetic moments of NitPO and LSMO. This behavior can be justified by a significant spin filtering effect at the engineered interface, with a carrier selection (spin‐up) opposite to that of the LSMO/Gaq3 interface (spin‐down). It is proposed that the engineering of spin injecting interfaces with molecules having magnetic moment enables additional mechanisms to control and manipulate the spin polarization of currents in spintronic devices.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||
| Journal or Publication Title: | Advanced Materials Interfaces | ||||||
| Publisher: | Wiley | ||||||
| ISSN: | 2196-7350 | ||||||
| Official Date: | 6 May 2016 | ||||||
| Dates: |
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| Volume: | 3 | ||||||
| Number: | 14 | ||||||
| Article Number: | 1500855 | ||||||
| DOI: | 10.1002/admi.201500855 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access |
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