Affiliation:
1. Henan Key Laboratory of Photovoltaic Materials, Center for Topological Functional Materials, Henan University , Kaifeng 475004, People's Republic of China
Abstract
Ferroelectric tunnel junctions remain great prospects for neuromorphic computing due to their significant nondestructive readout and ultra-low-energy consumption. In this work, versatile synaptic functions including paired-pulse facilitation, paired-pulse depression, spike-rate-dependent plasticity, and Bienenstock–Cooper–Munro learning rules have been simulated by electrical stimulation in ferroelectric tunnel junctions of the Au/La0.1Bi0.9FeO3/Nb:SrTiO3/In system. A potentiation at high frequency and a depression at low frequency are found under positive bias, while an opposite behavior is observed at negative bias. Furthermore, a fast Bienenstock–Cooper–Munro learning rule in nanosecond order with the sliding threshold rate and enhanced depression effect is demonstrated by only applying a series of presynaptic pulse trains. These findings provide a method for simulating fast Bienenstock–Cooper–Munro learning rules based on ferroelectric tunnel junction.
Funder
Key Scientific Research Project of Colleges and Universities in Henan Province
Intelligent Introduction Plan of Henan Province in 2021
Plan for the Leading Talent of Fundamental Research of Central China in 2020
Subject
Physics and Astronomy (miscellaneous)
Cited by
1 articles.
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