Atomic origin of ultrafast resistance switching in nanoscale electrometallization cells

Nature Materials
Nicolas OnofrioAlejandro Strachan

Abstract

Nanoscale resistance-switching cells that operate via the electrochemical formation and disruption of metallic filaments that bridge two electrodes are among the most promising devices for post-CMOS electronics. Despite their importance, the mechanisms that govern their remarkable properties are not fully understood, especially for nanoscale devices operating at ultrafast rates, limiting our ability to assess the ultimate performance and scalability of this technology. We present the first atomistic simulations of the operation of conductive bridging cells using reactive molecular dynamics with a charge equilibration method extended to describe electrochemical reactions. The simulations predict the ultrafast switching observed in these devices, with timescales ranging from hundreds of picoseconds to a few nanoseconds for devices consisting of Cu active electrodes and amorphous silica dielectrics and with dimensions corresponding to their scaling limit (cross-sections below 10 nm). We find that single-atom-chain bridges often form during device operation but that they are metastable, with lifetimes below a nanosecond. The formation of stable filaments involves the aggregation of ions into small metallic clusters, followed by a p...Continue Reading

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Citations

Dec 17, 2015·Nano Letters·Alexandros EmborasJuerg Leuthold
Mar 2, 2016·Nano Letters·Federico RaffoneGiancarlo Cicero
Aug 10, 2015·The Journal of Chemical Physics·Nicolas Onofrio, Alejandro Strachan
Dec 10, 2017·The Journal of Chemical Physics·Wenwen LiSatoshi Watanabe
Oct 7, 2017·Advanced Materials·Jihang Lee, Wei D Lu
Oct 27, 2015·Nanoscale Research Letters·Yang LiMing Liu
Apr 7, 2017·Beilstein Journal of Nanotechnology·Fangqing XieThomas Schimmel
Dec 18, 2019·Nanotechnology·Yu-Li ChenChandrasekar Sivakumar
Mar 31, 2016·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·José Antonio AramburuMiguel Moreno
Jun 30, 2018·Nature Communications·Myungsoo KimDeji Akinwande
Nov 17, 2015·Journal of Physics. Condensed Matter : an Institute of Physics Journal·J AkolaT Wágner
Mar 4, 2020·Nature Nanotechnology·Vinod K Sangwan, Mark C Hersam
Nov 11, 2020·The Journal of Chemical Physics·Laura ScalfiMathieu Salanne
Jan 5, 2021·Annual Review of Physical Chemistry·Laura ScalfiBenjamin Rotenberg
Jul 10, 2021·The Journal of Chemical Physics·Xingfei WeiRigoberto Hernandez
Aug 4, 2021·The Journal of Chemical Physics·Alessandra ServaMathieu Salanne
Feb 26, 2020·Nano Letters·Yusuke OchiaiTokushi Kizuka
Nov 14, 2018·ACS Applied Materials & Interfaces·Ke XuSusan K Fullerton-Shirey
Feb 2, 2018·ACS Applied Materials & Interfaces·Federico Raffone, Giancarlo Cicero
Jun 26, 2018·ACS Nano·Alexandros EmborasJuerg Leuthold
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Jul 10, 2019·ACS Applied Materials & Interfaces·Tingting ShenJoerg Appenzeller
Dec 21, 2021·Chemical Reviews·Stefan RingeKarsten Reuter
Dec 28, 2021·ACS Applied Materials & Interfaces·Zheng WangDeyan He

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