Work

A mean-field model of memristive circuit interaction

Year: 2018

Type: article

Abstract: We construct an exactly solvable circuit of interacting memristors and study its dynamics and fixed points. This simple circuit model interpolates between decoupled circuits of isolated memristors, and memristors in series, for which exact fixed points can be obtained. We introduce a Lyapunov functional that is found to be minimized along the non-equilibrium dynamics and which resembles a long-range Ising Hamiltonian with non-linear self-interactions. We use the Lyapunov functional as a Hamiltonian to calculate, in the mean-field theory approximation, the average asymptotic behavior of the circuit given a random initialization, yielding exact predictions for the case of decay to the lower resistance state, and reasonable predictions for the case of a decay to the higher resistance state.

Source: Europhysics Letters (EPL)

DOI: 10.1209/0295-5075/122/40008

Authors: F. Caravelli, P. Barucca

Institutions: Los Alamos National Laboratory, London Institute for Mathematical Sciences, University College London

Language: English

Topic: Advanced Memory and Neural Computing

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: National Nuclear Security Administration, Division of Mathematical Sciences, Los Alamos National Laboratory

Awards: G310521049, G3700687868, G75892134