Predictive modelling of ferroelectric tunnel junctions

查看全文 作　　者：Julian P [1,2]Velev;John D [1,3]Burton;Mikhail Ye [4,5]Zhuravlev;Evgeny Y [1,3]Tsymbal

机构地区：[1]Department of Physics and Astronomy,University of Nebraska,Lincoln,NE,USA;[2]Department of Physics and Astronomy,University of Puerto Rico,San Juan,Puerto Rico,USA;[3]Nebraska Center for Materials and Nanoscience,University of Nebraska,Lincoln,NE,USA;[4]Kurnakov Institute for General and Inorganic Chemistry,Russian Academy of Sciences,Moscow,Russia;[5]Faculty of Liberal Arts and Sciences,St Petersburg State University,St Petersburg,Russia

出　　处：《npj Computational Materials》索引2016年第1期,共13页

基　　金：supported by the National Science Foundation(NSF)through Materials Research Science and Engineering Center(MRSEC,grant no.DMR-1420645);the Semiconductor Research Corporation through Center for NanoFerroic Devices(CNFD);supported by NSF(grants nos EPS-1010094 and DMR-1105474). 摘　　要：Ferroelectric tunnel junctions combine the phenomena of quantum-mechanical tunnelling and switchable spontaneous polarisation of a nanometre-thick ferroelectric film into novel device functionality.Switching the ferroelectric barrier polarisation direction produces a sizable change in resistance of the junction—a phenomenon known as the tunnelling electroresistance effect.From a fundamental perspective,ferroelectric tunnel junctions and their version with ferromagnetic electrodes,i.e.,multiferroic tunnel junctions,are testbeds for studying the underlying mechanisms of tunnelling electroresistance as well as the interplay between electric and magnetic degrees of freedom and their effect on transport.From a practical perspective,ferroelectric tunnel junctions hold promise for disruptive device applications.In a very short time,they have traversed the path from basic model predictions to prototypes for novel non-volatile ferroelectric random access memories with non-destructive readout.This remarkable progress is to a large extent driven by a productive cycle of predictive modelling and innovative experimental effort.In this review article,we outline the development of the ferroelectric tunnel junction concept and the role of theoretical modelling in guiding experimental work.We discuss a wide range of physical phenomena that control the functional properties of ferroelectric tunnel junctions and summarise the state-of-the-art achievements in the field. 关键词：FERROELECTRIC TUNNEL RESISTANCE

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Predictive modelling of ferroelectric tunnel junctions

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