Neuromorphic computing applications could be made faster and more power efficient by emulating the function of a biological synapse. Non-conventional spintronic devices have been proposed that demonstrate synaptic behavior through domain wall (DW) driving. In this work, current induced domain wall motion has been studied through micromagnetic simulations. We investigate the synaptic behavior of a head to head domain wall driven by a spin polarized current in permalloy (Py) nanostrips with shape anisotropy, where triangular notches have been modeled to account for edge roughness and provide pinning sites for the domain wall. We seek optimal material parameters to keep the critical current density for driving the domain wall at order 1011 A/m2.
Micromagnetic Study of Current Induced Domain Wall Motion for Spintronic Synapses
2021-01-01
Hochschulschrift
Elektronische Ressource
Englisch
computational physics , micromagnetism , micromagnetic simulations , Mumax3 , current induced domain wall motion , domain wall driving , spin current , spin transfer torque , synapse , memristor , Neuromorphic computing , spintronic , brain inspired computing , Permalloy , nanowire , nanostrip , notches , Other Physics Topics , Annan fysik
DDC: | 629 |
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