Nonlinear frequency and amplitude modulation of a nanocontact-based spin-torque oscillator
2010 (English)In: Physical Review B, Vol. 81, no 14, 140408(R)- p.Article in journal (Refereed) Published
We study the current-controlled modulation of a nanocontact spin-torque oscillator. Three principally dif-ferent cases of frequency nonlinearity (d2f/dIdc2 being zero, positive, and negative) are investigated. Standardnonlinear frequency-modulation theory is able to accurately describe the frequency shifts during modulation. However, the power of the modulated sidebands only agrees with calculations based on a recent theory of combined nonlinear frequency and amplitude modulation.
Place, publisher, year, edition, pages
2010. Vol. 81, no 14, 140408(R)- p.
frequency modulation, spin-torque oscillator, spintronics
Condensed Matter Physics
Research subject Physics with spec. in Atomic, Molecular and Condensed Matter Physics
IdentifiersURN: urn:nbn:se:uu:diva-215377DOI: 10.1103/PhysRevB.81.140408OAI: oai:DiVA.org:uu-215377DiVA: diva2:686944