Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2012-03-15
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
8 pages, 6 figures
Scientific paper
Integrated power and linewidth of a propagating and a self-localized spin wave modes excited by spin-polarized current in an obliquely magnetized magnetic nanocontact are studied experimentally as functions of the angle $\theta_e$ between the external bias magnetic field and the nanocontact plane. It is found that the power of the propagating mode monotonically increases with $\theta_e$, while the power of the self-localized mode has a broad maximum near $\theta_e = 40$ deg, and exponentially vanishes near the critical angle $\theta_e = 58$ deg, at which the localized mode disappears. The linewidth of the propagating mode in the interval of angles $58<\theta_e<90$ deg, where only this mode is excited, is adequtely described by the existing theory, while in the angular interval where both modes can exist the observed linewidth of both modes is substantially broadened due to the telegraph switching between the modes. Numetical simulations and an approximate analytical model give good semi-quantitative description of the observed results.
Bonetti Stefano
Consolo Giancarlo
kerman Johan Å
Puliafito Vito
Slavin Andrei N.
No associations
LandOfFree
Power and linewidth of propagating and localized modes in nanocontact spin-torque oscillators does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Power and linewidth of propagating and localized modes in nanocontact spin-torque oscillators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power and linewidth of propagating and localized modes in nanocontact spin-torque oscillators will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-30108