Detection and characterization of multi-filament evolution during resistive switching
- 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
Web of Science
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