Real time observation of nanoscale multiple conductive filaments in RRAM by using advanced in-situ TEM

J. Sun, X. Wu, Q. Liu, M. Liu, L. T. Sun

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

In this letter, we dynamically investigate the resistive switching characteristics and physical mechanism of the ZrO2-based device. Using in-situ transmission electron microscopy, we observe in real time that multiple conductive filaments (CFs) are formed across the ZrO2 layer between top electrode and bottom electrodes after forming. Various top electrode materials have been used, such as Cu, Ag, and Ni. Contrary to common belief, it is found that CF growth begins at the anode, rather than having to reach the cathode and grow backwards. Energy-dispersive X-ray spectroscopy results confirm that metal from the top electrode is the main composition of the CFs.

Original languageEnglish
Title of host publicationProceedings of the 2013 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits, IPFA 2013
Pages560-562
Number of pages3
DOIs
StatePublished - 2013
Externally publishedYes
Event2013 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits, IPFA 2013 - Suzhou, China
Duration: 15 Jul 201319 Jul 2013

Publication series

NameProceedings of the International Symposium on the Physical and Failure Analysis of Integrated Circuits, IPFA

Conference

Conference2013 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits, IPFA 2013
Country/TerritoryChina
CitySuzhou
Period15/07/1319/07/13

Keywords

  • Transmission electron microscopy (TEM)
  • conductive filaments
  • in-situ
  • resistive random access memory

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