Relaxation of a Spiking Mott Artificial Neuron

We consider the phenomenon of electric Mott transition (EMT), which is an electrically induced insulator-to-metal transition. Experimentally, it is observed that depending on the magnitude of the electric excitation, the final state may show a short-lived or a long-lived resistance change. We extend...

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Publicado: 2018
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_23317019_v10_n5_p_Tesler
http://hdl.handle.net/20.500.12110/paper_23317019_v10_n5_p_Tesler
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_23317019_v10_n5_p_Tesler
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spelling paper:paper_23317019_v10_n5_p_Tesler2023-06-08T16:35:38Z Relaxation of a Spiking Mott Artificial Neuron We consider the phenomenon of electric Mott transition (EMT), which is an electrically induced insulator-to-metal transition. Experimentally, it is observed that depending on the magnitude of the electric excitation, the final state may show a short-lived or a long-lived resistance change. We extend a previous model for the EMT to include the effect of local structural distortions through an elastic energy term. We find that by strong electric pulsing, the induced metastable phase may become further stabilized by the electroelastic effect. We present a systematic study of the model by numerical simulations and compare the results to experiments in Mott insulators of the AM4Q8 family. Our work significantly extends the scope of our recently introduced leaky-integrate-and-fire Mott neuron [P. Stoliar et al., Adv. Funct. Mat. 27, 1604740 (2017)] to provide a better insight into the physical mechanism of its relaxation. This is a key feature for future implementations of neuromorphic circuits. © 2018 American Physical Society. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_23317019_v10_n5_p_Tesler http://hdl.handle.net/20.500.12110/paper_23317019_v10_n5_p_Tesler
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We consider the phenomenon of electric Mott transition (EMT), which is an electrically induced insulator-to-metal transition. Experimentally, it is observed that depending on the magnitude of the electric excitation, the final state may show a short-lived or a long-lived resistance change. We extend a previous model for the EMT to include the effect of local structural distortions through an elastic energy term. We find that by strong electric pulsing, the induced metastable phase may become further stabilized by the electroelastic effect. We present a systematic study of the model by numerical simulations and compare the results to experiments in Mott insulators of the AM4Q8 family. Our work significantly extends the scope of our recently introduced leaky-integrate-and-fire Mott neuron [P. Stoliar et al., Adv. Funct. Mat. 27, 1604740 (2017)] to provide a better insight into the physical mechanism of its relaxation. This is a key feature for future implementations of neuromorphic circuits. © 2018 American Physical Society.
title Relaxation of a Spiking Mott Artificial Neuron
spellingShingle Relaxation of a Spiking Mott Artificial Neuron
title_short Relaxation of a Spiking Mott Artificial Neuron
title_full Relaxation of a Spiking Mott Artificial Neuron
title_fullStr Relaxation of a Spiking Mott Artificial Neuron
title_full_unstemmed Relaxation of a Spiking Mott Artificial Neuron
title_sort relaxation of a spiking mott artificial neuron
publishDate 2018
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_23317019_v10_n5_p_Tesler
http://hdl.handle.net/20.500.12110/paper_23317019_v10_n5_p_Tesler
_version_ 1768546044643115008

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