Reconfigurable memristor based on SrTiO3 thin-film for neuromorphic computing

IF 6.5 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Frontiers of Physics Pub Date : 2023-07-11 DOI:10.1007/s11467-023-1308-0

Xiaobing Yan, Xu Han, Ziliang Fang, Zhen Zhao, Zixuan Zhang, Jiameng Sun, Yiduo Shao, Yinxing Zhang, Lulu Wang, Shiqing Sun, Zhenqiang Guo, Xiaotong Jia, Yupeng Zhang, Zhiyuan Guan, Tuo Shi

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引用次数: 2

Abstract

Neuromorphic computing aims to achieve artificial intelligence by mimicking the mechanisms of biological neurons and synapses that make up the human brain. However, the possibility of using one reconfigurable memristor as both artificial neuron and synapse still requires intensive research in detail. In this work, Ag/SrTiO₃(STO)/Pt memristor with low operating voltage is manufactured and reconfigurable as both neuron and synapse for neuromorphic computing chip. By modulating the compliance current, two types of resistance switching, volatile and nonvolatile, can be obtained in amorphous STO thin film. This is attributed to the manipulation of the Ag conductive filament. Furthermore, through regulating electrical pulses and designing bionic circuits, the neuronal functions of leaky integrate and fire, as well as synaptic biomimicry with spike-timing-dependent plasticity and paired-pulse facilitation neural regulation, are successfully realized. This study shows that the reconfigurable devices based on STO thin film are promising for the application of neuromorphic computing systems.

Abstract Image

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基于SrTiO3薄膜的神经形态计算可重构忆阻器

神经形态计算旨在通过模仿构成人脑的生物神经元和突触的机制来实现人工智能。然而，将一个可重构记忆电阻器同时用于人造神经元和突触的可能性仍需要深入的研究。在本工作中，制备了低工作电压的Ag/SrTiO3(STO)/Pt忆阻器，并可作为神经元和突触用于神经形态计算芯片。通过调制顺应电流，可以在非晶STO薄膜中获得挥发性和非挥发性两种类型的电阻开关。这是由于对银导电丝的操纵。此外，通过对电脉冲的调节和仿生电路的设计，成功实现了漏积分和火的神经元功能，以及具有脉冲时间依赖性可塑性和对脉冲易化神经调节的突触仿生。该研究表明，基于STO薄膜的可重构器件在神经形态计算系统中的应用前景广阔。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frontiers of Physics PHYSICS, MULTIDISCIPLINARY-

CiteScore

9.20

自引率

9.30%

发文量

898

审稿时长

6-12 weeks

期刊介绍： Frontiers of Physics is an international peer-reviewed journal dedicated to showcasing the latest advancements and significant progress in various research areas within the field of physics. The journal's scope is broad, covering a range of topics that include: Quantum computation and quantum information Atomic, molecular, and optical physics Condensed matter physics, material sciences, and interdisciplinary research Particle, nuclear physics, astrophysics, and cosmology The journal's mission is to highlight frontier achievements, hot topics, and cross-disciplinary points in physics, facilitating communication and idea exchange among physicists both in China and internationally. It serves as a platform for researchers to share their findings and insights, fostering collaboration and innovation across different areas of physics.