Theory of ultrafast conductance modulation in electrochemical protonic synapses by multiphase polarization
Year: 2026
Type: article
Abstract: Recent advances in protonic electrochemical random-access memory (ECRAM) have demonstrated ultrafast, nanosecond switching dynamics, seemingly faster than diffusion. We develop a theory to explain how these devices outperform some counterparts by up to five orders of magnitude by leveraging multiphase polarization in tungsten oxide, which can be tuned during annealing of the material. Supported by simulations, the theory shows that high-concentration metallic phases formed electrochemically along the gate enable the conductance to be modulated linearly and symmetrically throughout the ultrafast switching protocols.
Source: Physical Review Materials
DOI: 10.1103/m4jb-v7vd
Authors: Michael L. Li, Dingyu Shen, Jesus A. del Alamo, Martin Z. Bazant
Institution: Massachusetts Institute of Technology
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Funder: Telefonaktiebolaget LM Ericsson
OpenAlex ID: W4414921172
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