SPICE Compact Model for an Analog Switching Niobium Oxide Memristor

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In this paper, we present a compact SPICE model of an analog switching memristive device based on niobium oxide and investigate the functionality of the same as a synapse element through its compact model by utilizing it in a simulation of an 8x8 resistive crossbar array. Considering especially the von Neumann bottleneck for neural network computing tasks, memristive crossbar arrays offer a potential in-memory computing solution performing highly parallel matrix-vector multiplication and reducing the energy consumption. In particular, multi- level switching memristive devices with intrinsic self-compliance are predestined for crossbar operations. Based on experimental results of a bi-layer Ti/Al2O3/Nb2O5/Ti stack, a compact physical model was recently derived, assuming an underlying Poole-Frenkel emission mechanism. High model accuracy in terms of I-V behaviors, dynamic route map and power exponent plots were demonstrated by fitting the nonlinear I-V relation and the state function to measurement data, verifying analog gradual switching for the voltage driven extended memristor. In this paper the SPICE implementation for the core memductance accompanied by a parallel and series resistor is introduced and its application for sense analysis via analog and multi-memristor circuit exploitation is presented. Adopting the SPICE model, the switching dynamics is investigated and discussed for performing synaptic potentiation and depression behavior in a potential crossbar application.


Original languageEnglish
Number of pages1
Publication statusPublished - 2022


TitleInternational Conference on Modern Circuits and Systems Technologies 2022
Abbreviated titleMOCAST 2022
Conference number11
Duration8 - 10 June 2022
Degree of recognitionNational event
LocationHaus der Wissenschaft & online

External IDs

Scopus 85136150800
dblp conf/mocast/SchroedterDATMH22
WOS 000853078900070
Mendeley b2daeb68-f82f-3e18-8ec4-209a70d0339b
ORCID /0000-0002-1236-1300/work/142239543
ORCID /0000-0001-7436-0103/work/142240349
ORCID /0000-0003-3259-4571/work/142249665
ORCID /0000-0003-3814-0378/work/142256112


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  • Compact physical SPICE model, Poole-Frenkel emission, analog gradual switching niobium oxide memristor, bi-layer Al2O3/Nb2O5 stack, synaptic memristive behavior for crossbar application