Versatile Functionality of Four-Terminal TiO₂₋ₓ Memristive Devices as Artificial Synapses for Neuromorphic Computing

Miyake, Ryotaro; Nagata, Zenya; Adachi, Kenta et al.

ACS Applied Electronic Materials, 2022, 4(5), 2326-2336

Number of Access:873（2025-08-29 00:52 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/88313

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Title
Versatile Functionality of Four-Terminal TiO₂₋ₓ Memristive Devices as Artificial Synapses for Neuromorphic Computing
Creator
CreatorName
Miyake, Ryotaro
CreatorName
Nagata, Zenya
CreatorName
Adachi, Kenta
NRID
1000000800484 1000000800484
researchmap permalink
YusukeHayashi YusukeHayashi
Scopus Author ID
55712779600 55712779600
CreatorName
Hayashi, Yusuke
NRID
1000000463878 1000000463878
ORCID
0000-0002-4113-2566 0000-0002-4113-2566
researchmap permalink
ttohei ttohei
Scopus Author ID
55880985600 55880985600
CreatorName
Tohei, Tetsuya
NRID
1000020314031 1000020314031
ORCID
0000-0002-0654-504X 0000-0002-0654-504X
researchmap permalink
read0192520 read0192520
Scopus Author ID
7402911242 7402911242
CreatorName
Sakai, Akira
Subject
artificial synapse
memristive device
heterosynaptic
neuromodulation
reduced TiO₂₋ₓ
gate-tuning
multiterminal
resistive switching
Description
Ryotaro Miyake, Zenya Nagata, Kenta Adachi, Yusuke Hayashi, Tetsuya Tohei, and Akira Saka. Versatile Functionality of Four-Terminal TiO₂₋ₓ Memristive Devices as Artificial Synapses for Neuromorphic Computing. ACS Applied Electronic Materials 2022 4 (5), 2326-2336. DOI: 10.1021/acsaelm.2c00161. ©2022 American Chemical Society
Abstract
Brain-inspired computing systems, which emulate the activity of biological synapses and neurons, are becoming more and more essential owing to their potential ability to solve the von Neumann bottleneck. Various types of memristive devices have been proposed to achieve information processing through synaptic functions. However, biological synapses have many complicated functions, such as heterosynaptic plasticity and the related neuromodulation, that are difficult to implement in conventional two-terminal memristors because of the requirement for multiple inputs. In this study, simple four-terminal memristive devices consisting of epitaxial thin films of Ti₂₋ₓ are fabricated and their capacity to implement synaptic functions are explored. These devices utilize the two-dimensional variation of the oxygen vacancy distribution in the TiO₂₋ₓ film to realize advanced heterosynaptic functionality, including tunable spike-timing-dependent plasticity, heterosynaptic plasticity mimicking habituation and sensitization, and Pavlovian conditioning, through multiterminal voltage inputs. The present results demonstrate the striking versatility of our four-terminal device for implementing the diverse and complex functions of artificial synapses on a single memristive passive element.
Publisher
American Chemical Society
Source Title
ACS Applied Electronic Materials
Volume (Issue)
4(5)
Page
2326-2336
Date of Issued
2022-05-24
Language
English
Handle URL
https://hdl.handle.net/11094/88313
eISSN
26376113
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1021/acsaelm.2c00161
Access Rights
open access
CopyRight
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Electronic Materials, © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsaelm.2c00161.
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article