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Frequency modulation of spin torque oscillator pairs
KTH, School of Information and Communication Technology (ICT), Material Physics.
KTH, School of Information and Communication Technology (ICT), Material Physics.
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2011 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 98, no 19, 192501- p.Article in journal (Refereed) Published
Abstract [en]

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.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-34394DOI: 10.1063/1.3588218ISI: 000290586800039Scopus ID: 2-s2.0-79959685077OAI: oai:DiVA.org:kth-34394DiVA: diva2:420977
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Note
QC 20110607Available from: 2011-06-07 Created: 2011-06-07 Last updated: 2017-12-11Bibliographically approved

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