Frequency modulation of spin torque oscillator pairs

Research output: Contribution to journalArticle

DOI

Authors

  • Ye. Pogoryelov
  • Pranaba K. Muduli
  • Stefano Bonetti
  • Ezio Iacocca
  • Fred Mancoff
  • Johan Akerman

External departments

  • KTH Royal Institute of Technology
  • University of Gothenburg

Details

Original languageEnglish
Article number192501
JournalApplied Physics Letters
Volume98
Issue number19
Early online date9 May 2011
DOIs
Publication statusPublished - 9 May 2011
Externally publishedYes
Publication type

Research output: Contribution to journalArticle

Abstract

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.

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