Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-12-10
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 figures
Scientific paper
We demonstrate a scalable new ferromagnetic resonance (FMR) technique based on the spin-orbit interaction. An alternating current drives FMR in uniform ferromagnetic structures patterned from the dilute magnetic semiconductors (Ga,Mn)As and (Ga,Mn)(As,P). This allows the direct measurement of magnetic anisotropy coefficients and damping parameters for individual nano-bars. By analysing the ferromagnetic resonance lineshape, we perform vector magnetometry on the current-induced driving field, observing contributions with symmetries of both the Dresselhaus and Rashba spin-orbit interactions.
Campion R. P.
Casiraghi A.
Fang Daining
Ferguson Andrew J.
Gallagher B. L.
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