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Title: Detection and characterization of multi-filament evolution during resistive switching

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4892471· OSTI ID:1145719
 [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

We present resistive switching data in TaOx memristors displaying signatures of multi-filament switching modes, and develop a geometrically defined equivalent circuit to separate the individual resistances and powers dissipated in each filament. Using these resolved values, we compare the individual switching curves of each filament and demonstrate that the switching data of each filament collapse onto a single switching curve determined by the analytical steady-state resistive switching solution for filamentary switching. Analyzing our results in terms of this solution, we determine the switching temperature, heat flow, conductivity, and time evolving areas of each filament during resistive switching. Finally, we discuss operational modes which may limit the formation of additional conducting filaments, potentially leading to increased device endurance.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1145719
Report Number(s):
SAND2014-4055J; APPLAB; 518013
Journal Information:
Applied Physics Letters, Vol. 105, Issue 5; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

References (20)

Redox-Based Resistive Switching Memories - Nanoionic Mechanisms, Prospects, and Challenges journal July 2009
Nanoionics-based resistive switching memories journal November 2007
Memristive switching: physical mechanisms and applications journal April 2014
Atomic structure of conducting nanofilaments in TiO2 resistive switching memory journal January 2010
Anatomy of a Nanoscale Conduction Channel Reveals the Mechanism of a High-Performance Memristor journal November 2011
Memristive devices for computing journal January 2013
‘Memristive’ switches enable ‘stateful’ logic operations via material implication journal April 2010
Nanometer-Scale ${\rm HfO}_{x}$ RRAM journal August 2013
Sub-nanosecond switching of a tantalum oxide memristor journal November 2011
Isothermal Switching and Detailed Filament Evolution in Memristive Systems journal April 2014
Scaling Effect on Unipolar and Bipolar Resistive Switching of Metal Oxides journal April 2013
On the weibull shape factor of intrinsic breakdown of dielectric films and its accurate experimental determination-part I: theory, methodology, experimental techniques journal December 2002
On the weibull shape factor of intrinsic breakdown of dielectric films and its accurate experimental determination-part II: experimental results and the effects of stress conditions journal December 2002
A CMOS Compatible, Forming Free TaOx ReRAM journal August 2013
Optimizing TaOx memristor performance and consistency within the reactive sputtering “forbidden region” journal August 2013
Reactive sputtering of substoichiometric Ta2Ox for resistive memory applications
  • Stevens, James E.; Lohn, Andrew J.; Decker, Seth A.
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 32, Issue 2, Article No. 021501 https://doi.org/10.1116/1.4828701
journal March 2014
Dynamics of percolative breakdown mechanism in tantalum oxide resistive switching journal October 2013
A fast, high-endurance and scalable non-volatile memory device made from asymmetric Ta2O5−x/TaO2−x bilayer structures journal July 2011
High switching endurance in TaOx memristive devices journal December 2010
Analytical estimations for thermal crosstalk, retention, and scaling limits in filamentary resistive memory journal June 2014

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