2024-03-28T14:04:16Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1813932022-04-13T08:03:27Zcom_10261_36com_10261_4col_10261_289
Generation of coherent spin-wave modes in yttrium iron garnet microdiscs by spin–orbit torque
Collet, Martin
Milly, X. de
Kelly, O. d’Allivy
Naletov, V. V.
Bernard, R.
Bortolotti, Paolo
Ben Youssef, J.
Demidov, V. E.
Demokritov, S.O.
Prieto, J. L.
Muñoz Sánchez, Manuel
Cros, Vicent
Anane, Abdelmadjid
Loubens, G. de
Klein, Oliver
France Génomique
Direction Générale de l'Armement (France)
Région Auvergne-Rhône-Alpes
Russian Government
Kazan Federal University
In recent years, spin–orbit effects have been widely used to produce and detect spin currents
in spintronic devices. The peculiar symmetry of the spin Hall effect allows creation of a spin
accumulation at the interface between a metal with strong spin–orbit interaction and a
magnetic insulator, which can lead to a net pure spin current flowing from the metal into the
insulator. This spin current applies a torque on the magnetization, which can eventually be
driven into steady motion. Tailoring this experiment on extended films has proven to be
elusive, probably due to mode competition. This requires the reduction of both the thickness
and lateral size to reach full damping compensation. Here we show clear evidence of coherent
spin–orbit torque-induced auto-oscillation in micron-sized yttrium iron garnet discs of
thickness 20 nm. Our results emphasize the key role of quasi-degenerate spin-wave modes,
which increase the threshold current.
2019-05-14T10:29:34Z
2019-05-14T10:29:34Z
2016-01-27
artículo
Nature Communications 7: 10377 (2016)
http://hdl.handle.net/10261/181393
10.1038/ncomms10377
2041-1723
http://dx.doi.org/10.13039/501100010115
http://dx.doi.org/10.13039/501100006021
26815737
eng
Publisher's version
https://doi.org/10.1038/ncomms10377
Sí
http://creativecommons.org/licenses/by/4.0/
openAccess
Nature Publishing Group