2022/10/17 by Miquel López-Suárez, Claudio Melis, López-Suárez, Miquel +5
Computer Science · Engineering · Materials Science · #Advanced Memory and Neural Computing #Cellular Automata and Applications #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Quasicrystal Structures and Properties
paper · pdf · doi:10.48550/arxiv.2210.09379
openalex publication_date 2022/10/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Metallic nanogranular films display a complex dynamical response to a constant bias, showing up as atypical resistive switching mechanism which could be used to create electrical components for neuromorphic applications. To model such a phenomenon we use a multiscale approach blending together an ab initio treatment of the electric current at the nanoscale, a molecular dynamical approach dictating structural rearrangements, and a finite-element solution of the heat equation for heat propagation in the sample. We also consider structural changes due to electromigration which are modelled on the basis of experimental observations on similar systems. Within such an approach, we manage to describe some distinctive features of the resistive switching occurring in nanogranular film and provide a physical interpretation at the microscopic level.