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- Title
An Organic Spin Valve Embedding a Self-Assembled Monolayer of Organic Radicals.
- Authors
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; Sessoli, Roberta
- 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/AlO x/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.
- Subjects
SPIN valves; MOLECULAR self-assembly; FERROMAGNETIC materials; SPIN polarization; SPINTRONICS
- Publication
Advanced Materials Interfaces, 2016, Vol 3, Issue 14, pn/a
- ISSN
2196-7350
- Publication type
Article
- DOI
10.1002/admi.201500855