%0 Journal Article
%T Spin torque ferromagnetic resonance with magnetic field modulation
%A A. M. Gon£żalves
%A I. Barsukov
%A Y. -J. Chen
%A L. Yang
%A J. A. Katine
%A I. N. Krivorotov
%J Physics
%D 2013
%I arXiv
%R 10.1063/1.4826927
%X We demonstrate a technique of broadband spin torque ferromagnetic resonance (ST-FMR) with magnetic field modulation for measurements of spin wave properties in magnetic nanostructures. This technique gives great improvement in sensitivity over the conventional ST-FMR measurements, and application of this technique to nanoscale magnetic tunnel junctions (MTJs) reveals a rich spectrum of standing spin wave eigenmodes. Comparison of the ST-FMR measurements with micromagnetic simulations of the spin wave spectrum allows us to explain the character of low-frequency magnetic excitations in nanoscale MTJs.
%U http://arxiv.org/abs/1310.7996v1