Frequency modulation of spin torque oscillator pairs
2011 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 98, no 19, 192501- p.Article in journal (Refereed) Published
The current controlled modulation of nanocontact based spin torque oscillator (STO) pairs is studied in both the synchronized and nonsynchronized states. The synchronized state shows a well behaved modulation and demonstrates robust mutual locking even under strong modulation. The power distribution of the modulation sidebands can be quantitatively described by assuming a single oscillator model. However, in the nonsynchronized state, the modulation sidebands are not well described by the model, indicating interactions between the two individual nanocontact STOs. These findings are promising for potential applications requiring the modulation of large synchronized STO arrays.
Place, publisher, year, edition, pages
2011. Vol. 98, no 19, 192501- p.
IdentifiersURN: urn:nbn:se:kth:diva-34394DOI: 10.1063/1.3588218ISI: 000290586800039ScopusID: 2-s2.0-79959685077OAI: oai:DiVA.org:kth-34394DiVA: diva2:420977
FunderSwedish Research CouncilKnut and Alice Wallenberg Foundation
QC 201106072011-06-072011-06-072011-06-07Bibliographically approved