Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Spin transfer switching and low-field precession in exchange-biased spin valve nanopillars
AU - Wu, M. C.
AU - Aziz, A.
AU - Morecroft, D.
AU - Blamire, M. G.
AU - Hickey, M. C.
AU - Ali, M.
AU - Burnell, G.
AU - Hickey, B. J.
PY - 2008/4/7
Y1 - 2008/4/7
N2 - Using a three-dimensional focused ion beam lithography process, we have fabricated nanopillar devices that show spin transfer torque switching at zero external magnetic fields. Under a small in-plane external bias field, a field-dependent peak in the differential resistance versus current is observed similar to that reported in asymmetrical nanopillar devices. This is interpreted as evidence for the low-field excitation of spin waves, which in our case is attributed to a spin-scattering asymmetry enhanced by the IrMn exchange bias layer coupled to a relatively thin CoFe fixed layer. (c) 2008 American Institute of Physics.
AB - Using a three-dimensional focused ion beam lithography process, we have fabricated nanopillar devices that show spin transfer torque switching at zero external magnetic fields. Under a small in-plane external bias field, a field-dependent peak in the differential resistance versus current is observed similar to that reported in asymmetrical nanopillar devices. This is interpreted as evidence for the low-field excitation of spin waves, which in our case is attributed to a spin-scattering asymmetry enhanced by the IrMn exchange bias layer coupled to a relatively thin CoFe fixed layer. (c) 2008 American Institute of Physics.
KW - DEVICES
KW - WAVES
KW - EXCITATIONS
KW - MAGNETIC MULTILAYER
KW - ELECTRIC-CURRENT
KW - FILMS
U2 - 10.1063/1.2905816
DO - 10.1063/1.2905816
M3 - Journal article
VL - 92
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 14
M1 - 142501
ER -