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Göteborgs universitets publikationer

Spin-wave-beam driven synchronization of nanocontact spin-torque oscillators

Författare och institution:
Afshin Houshang (Institutionen för fysik (GU)); Ezio Iacocca (Institutionen för fysik (GU)); Philipp Dürrenfeld (Institutionen för fysik (GU)); Sohrab Sani (-); Johan Åkerman (Institutionen för fysik (GU)); Randy K. Dumas (Institutionen för fysik (GU))
Publicerad i:
Nature Nanotechnology, 11 s. 280-286
ISSN:
1748-3387
Publikationstyp:
Artikel, refereegranskad vetenskaplig
Publiceringsår:
2016
Språk:
engelska
Fulltextlänk:
Sammanfattning (abstract):
The synchronization of multiple nanocontact spin-torque oscillators (NC-STOs) is mediated by propagating spin waves (SWs). Although it has been shown that the Oersted field generated in the vicinity of the NC can dramatically alter the emission pattern of SWs, its role in the synchronization behaviour of multiple NCs has not been considered so far. Here we investigate the synchronization behaviour in multiple NC-STOs oriented either vertically or horizontally, with respect to the in-plane component of the external field. Synchronization is promoted (impeded) by the Oersted field landscape when the NCs are oriented vertically (horizontally) due to the highly anisotropic SW propagation. Not only is robust synchronization between two oscillators observed for separations larger than 1,000 nm, but synchronization of up to five oscillators, a new record, has been observed in the vertical array geometry. Furthermore, the synchronization can no longer be considered mutual in nature.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
NATURVETENSKAP ->
Fysik ->
Den kondenserade materiens fysik ->
Magnetism
TEKNIK OCH TEKNOLOGIER ->
Nanoteknik
Projekt:
Magnonics Using Spin Torque, spin caloritronics, And Nanoplasmonic engineerinG (MUSTANG) (EC/FP7/307144)
Postens nummer:
234204
Posten skapad:
2016-04-06 12:11
Posten ändrad:
2016-04-29 13:37

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