Dual SOT Switching Modes in a Single Device Geometry for Neuromorphic Computing.

ABSTRACT: Neuromorphic computing aims to replicate the brain's efficient processing through artificial neurons and synapses, requiring binary and multilevel switching. We present a PtMn/(Co/Pd)₄/Ta device that uniquely enables dual spin-orbit torque (SOT) switching modes─binary and multilevel (analog)─within the same geometry and stack structure, eliminating the need for device modifications. Binary SOT switching is achieved via domain wall nucleation and propagation at moderate current levels (∼65 mA), while multilevel switching occurs via domain nucleation mode without significant propagation after a high-current treatment (∼85 mA). The transition between two modes originates from structural changes after the current treatment. These modes allow for neuronal and synaptic functionalities

SUBMITTER: Ranjan A 

PROVIDER: S-EPMC12046592 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature