Itinerant conductance in fuse-antifuse networks

TL;DR

This paper introduces a new dynamic phase in fuse-antifuse networks where current channels continuously change over time, driven by the unique properties of fuse-antifuse devices that switch between conducting and insulating states.

Contribution

It establishes the conditions and phase diagram for the emergence of itinerant conductance in fuse-antifuse networks, linking electrical behavior to porous media flow.

Findings

Identification of a dynamic phase with perpetual current channel changes

Phase diagram mapping the conditions for itinerant conductance

Potential applications in electronic devices and porous media modeling

Abstract

We report on a novel dynamic phase in electrical networks, in which current channels perpetually change in time. This occurs when the individual elements of the network are fuse-antifuse devices, namely, become insulators within a certain finite interval of local applied voltages. As a consequence, the macroscopic current exhibits temporal fluctuations which increase with system size. We determine the conditions under which this exotic situation appears by establishing a phase diagram as a function of the applied field and the size of the insulating window. Besides its obvious application as a versatile electronic device, due to its rich variety of behaviors, this network model provides a possible description for particle-laden flow through porous media leading to dynamical clogging and reopening of the local channels in the pore space.