Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Reduction in critical current of current induced switching in an inhomogeneous nanomagnet
AU - Wu, M. C.
AU - Aziz, A.
AU - Ali, M.
AU - Marrows, C. H.
AU - Hickey, B. J.
AU - Barber, Z. H.
AU - Blamire, M. G.
PY - 2009/3/23
Y1 - 2009/3/23
N2 - We report low current-density switching of pseudospin valve nanopillars fabricated by a three-dimensional focused ion beam lithography. Simulations using the Landau-Liftshitz-Gilbert equation with Slonczewski spin transfer torque term demonstrate that magnetostatic coupling combined with an in-plane applied field results in a strongly inhomogeneous magnetization, which is close to the point of switching in both parallel and antiparallel configurations and so significantly reduced switching currents are possible.
AB - We report low current-density switching of pseudospin valve nanopillars fabricated by a three-dimensional focused ion beam lithography. Simulations using the Landau-Liftshitz-Gilbert equation with Slonczewski spin transfer torque term demonstrate that magnetostatic coupling combined with an in-plane applied field results in a strongly inhomogeneous magnetization, which is close to the point of switching in both parallel and antiparallel configurations and so significantly reduced switching currents are possible.
KW - spin valves
KW - nanoelectronics
KW - MAGNETIZATION REVERSAL
KW - nanostructured materials
KW - FABRICATION
KW - nanofabrication
KW - magnetisation
KW - magnetic switching
KW - SPIN
KW - ion beam lithography
U2 - 10.1063/1.3109790
DO - 10.1063/1.3109790
M3 - Journal article
VL - 94
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 12
M1 - 122511
ER -