Recent advances, perspectives, and challenges inferroelectric synapses

doi:10.1088/1674-1056/aba603

Abstract The multiple ferroelectric polarization tuned by external electric field could be used to simulate the biological synaptic weight. Ferroelectric synaptic devices have two advantages compared with other reported ones: One is that the intrinsic switching of ferroelectric domains without invoking of defect migration as in resistive oxides, contributes reliable performance in these ferroelectric synapses. Another tremendous advantage is the extremely low energy consumption because the ferroelectric polarization is manipulated by electric field which eliminates the Joule heating by current as in magnetic and phase change memories. Ferroelectric synapses have potential for the construction of low-energy and effective brain-like intelligent networks. Here we summarize recent pioneering work of ferroelectric synapses involving the structure of ferroelectric tunnel junctions (FTJs), ferroelectric diodes (FDs), and ferroelectric field effect transistors (FeFETs), respectively, and shed light on future work needed to accelerate their application for efficient neural network.

Keywords: ferroelectric synapse ferroelectric tunnel junctions ferroelectric field effect transistors

Received: 11 May 2020
Revised: 08 July 2020
Accepted manuscript online: 15 July 2020

PACS:	77.22.Ej	(Polarization and depolarization)
	77.80.Dj	(Domain structure; hysteresis)
	87.19.lg	(Synapses: chemical and electrical (gap junctions))
	75.85.+t	(Magnetoelectric effects, multiferroics)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61804055), "Chenguang Program" supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission, China (Grant No. 17CG24), and Shanghai Science and Technology Innovation Action Plan, China (Grant No. 19JC1416700).

Corresponding Authors: Bo-Bo Tian, Chun-Gang Duan
E-mail: bbtian@ee.ecnu.edu.cn;cgduan@clpm.ecnu.edu.cn

Cite this article:

Bo-Bo Tian(田博博), Ni Zhong(钟妮), Chun-Gang Duan(段纯刚) Recent advances, perspectives, and challenges inferroelectric synapses 2020 Chin. Phys. B 29 097701

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