Holographic imaging of magnetization in a single layer nano-contact spin transfer oscillator
van der Laan, G
Ogrin, Feodor Y.
IEEE Transactions on Magnetics
Institute of Electrical and Electronics Engineers (IEEE)
Time-averaged images of the magnetization within single layer spin transfer oscillators have been obtained using the holography with extended reference by autocorrelation linear differential operator (HERALDO) technique. Transport measurements on a Pd(5)- Cu(20)- Ni 81 Fe 19 (7)-Cu(2)-Pd(2) (in nm) stack with a 100 nm diameter nano-contact reveal the presence of vortex dynamics. Magnetic images of the device for injected current values of 24mA and -24mA suggest that a vortex has been ejected from the nano-contact and become pinned at the edge of the region that is visible through the Au mask.
The author was supported by CONICYT–Becas Chile. P. Keatley was supported by EPRSC grant EP/I038470/1.
This is the author accepted manuscript. The final version is available from IEEE via the DOI in this record.
Date of Publication : 11 February 2016