Lognormal switching times for titanium dioxide bipolar memristors: origin and resolution.
We measured the switching time statistics for a TiO(2) memristor and found that they followed a lognormal distribution, which is a potentially serious problem for computer memory and data storage applications. We examined the underlying physical phenomena that determine the switching statistics and proposed a simple analytical model for the distribution based on the drift/diffusion equation and previously measured nonlinear drift behavior. We designed a closed-loop switching protocol that dramatically narrows the time distribution, which can significantly improve memory circuit performance and reliability.
Hewlett-Packard Laboratories, Palo Alto, CA 94304, USA.
Gilberto
G
Medeiros-Ribeiro
Frederick
F
Perner
Richard
R
Carter
Hisham
H
Abdalla
Matthew D
MD
Pickett
R Stanley
RS
Williams
D016248:Computer Storage Devices; D017097:Electric Impedance; D004867:Equipment Design; D019544:Equipment Failure Analysis; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000295:instrumentation*; D010316:Particle Size; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014025:Titanium / Q000737:chemistry*
C009495:titanium dioxide; D014025:Titanium