http://www.cnr.it/ontology/cnr/individuo/prodotto/ID316507
Role of B diffusion in the interfacial Dzyaloshinskii-Moriya interaction in Ta/Co20Fe60B20/MgO nanowires (Articolo in rivista)
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- Role of B diffusion in the interfacial Dzyaloshinskii-Moriya interaction in Ta/Co20Fe60B20/MgO nanowires (Articolo in rivista) (literal)
- Anno
- 2015-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevB.91.014433 (literal)
- Alternative label
R. Lo Conte, E. Martinez, A. Hrabec, A. Lamperti, T. Schulz, L. Nasi, L. Lazzarini, R. Mantovan, F. Maccherozzi, S. S. Dhesi, B. Ocker, C. H. Marrows, T. A. Moore, and M. Kläui (2015)
Role of B diffusion in the interfacial Dzyaloshinskii-Moriya interaction in Ta/Co20Fe60B20/MgO nanowires
in Physical review. B, Solid state; The American Physical Society, College Park, MD 20740-3844 (Stati Uniti d'America)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- R. Lo Conte, E. Martinez, A. Hrabec, A. Lamperti, T. Schulz, L. Nasi, L. Lazzarini, R. Mantovan, F. Maccherozzi, S. S. Dhesi, B. Ocker, C. H. Marrows, T. A. Moore, and M. Kläui (literal)
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- http://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.014433 (literal)
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- Johannes Gutenberg Universität-Mainz, Institut für Physik, Staudinger Weg 7, 55128 Mainz,
Germany
Graduate School of Excellence Materials Science in Mainz (MAINZ), Staudinger Weg 9, 55128
Mainz, Germany
Dpto. Fisica Aplicada, Universidad de Salamanca, plaza de los Caidos s/n E-38008, Salamanca,
Spain
School of Physics and Astronomy, E. C. Stoner Laboratory, University of Leeds, Leeds LS2 9JT,
U.K.
Laboratorio MDM, IMM-CNR, via C. Olivetti 2, 20864 Agrate Brianza (MB), Italy
IMEM-CNR, Parco Area delle Scienze 37/A, 43124 Parma (PR), Italy
Diamond Light Source, Chilton, Didcot, Oxfordshire, OX11 0DE, U.K.
Singulus Technologies AG, 63796 Kahl am Main, Germany (literal)
- Titolo
- Role of B diffusion in the interfacial Dzyaloshinskii-Moriya interaction in Ta/Co20Fe60B20/MgO nanowires (literal)
- Abstract
- We report on current-induced domain wall motion in Ta/Co20Fe60B20/MgO nanowires. Domain walls are observed to move against the electron flow when no magnetic field is applied, while a field along the nanowires strongly affects the domain wall motion velocity. A symmetric effect is observed for up-down and down-up domain walls. This indicates the presence of right-handed domain walls, due to a Dzyaloshinskii-Moriya interaction (DMI) with a DMI coefficient D=+0.06mJ/m2. The positive DMI coefficient is interpreted to be a consequence of B diffusion into the Ta buffer layer during annealing, which was observed by chemical depth profiling measurements. The experimental results are compared to one-dimensional model simulations including the effects of pinning. This modeling allows us to reproduce the experimental outcomes and reliably extract a spin-Hall angle ?SH=-0.11 for Ta in the nanowires, showing the importance of an analysis that goes beyond the model for perfect nanowires. (literal)
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