Frequency modulation of spin torque oscillator pairs
Artikel i vetenskaplig tidskrift, 2011

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.

spintronics

microwave electronics

magnetism

Författare

Yevgen Pogoryelov

Pranaba Muduli Kishor

Göteborgs universitet

Stefano Bonetti

Ezio Iacocca

Göteborgs universitet

Fred Mancoff

Johan Åkerman

Göteborgs universitet

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 98 19 192501-

Ämneskategorier

Övrig annan teknik

Den kondenserade materiens fysik

DOI

10.1063/1.3588218