Non-linear frequency and amplitude modulation of a nano-contact based spin torque oscillator

Muduli, P. K.; Bonetti, S.; Pogoryelov, Y. e.; Consolo, Giancarlo; Mancoff, F.; Akerman, J.

doi:10.1103/PhysRevB.81.140408

We study the current-controlled modulation of a nanocontact spin-torque oscillator. Three principally different cases of frequency nonlinearity (d2 f/d I dc 2 being zero, positive, and negative) are investigated. Standard nonlinear 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.

Titolo:	Non-linear frequency and amplitude modulation of a nano-contact based spin torque oscillator
Autori:	P. K. Muduli S. Bonetti Y.e. Pogoryelov CONSOLO, Giancarlo F. Mancoff J. Akerman mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2010
Rivista:	PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS
Abstract:	We study the current-controlled modulation of a nanocontact spin-torque oscillator. Three principally different cases of frequency nonlinearity (d2 f/d I dc 2 being zero, positive, and negative) are investigated. Standard nonlinear 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.
Handle:	http://hdl.handle.net/11570/1905019
Appare nelle tipologie:	14.a.1 Articolo su rivista

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