Switching time of nanowire memory.
Cadmium sulfide nanowires of 10-nm diameter, electrodeposited in porous anodic alumina films, exhibit an electronic bistability that can be harnessed for non-volatile memory. The current-voltage characteristics of the wires show two stable conductance states that are well-separated (conductances differ by more than 4 orders of magnitude) and long lived (longevity > 1 year at room temperature). These two states can encode binary bits 0 and 1. Here we report measurements of the switching time to switch from the high- to the low-conductance state. These measurements also shed some light on the physical mechanisms underlying the bistability.
Varfolomeev
A
A
Russian Research Center, Kurchatov Institute, Kurchatov Sq. 1, Moscow, Russia.
Pokalyakin
V
V
Tereshin
S
S
Zaretsky
D
D
Bandyopadhyay
S
S
D019187:Cadmium Compounds / Q000032:analysis / Q000737:chemistry*; D004553:Electric Conductivity; D004559:Electric Wiring; D004563:Electrochemistry / Q000295:instrumentation* / Q000379:methods; D004581:Electronics; D004867:Equipment Design; D019544:Equipment Failure Analysis; D016247:Information Storage and Retrieval / Q000379:methods; D008422:Materials Testing; D008839:Microelectrodes; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013440:Sulfides / Q000032:analysis / Q000737:chemistry*; D013997:Time Factors
D019187:Cadmium Compounds; D013440:Sulfides; C034939:cadmium sulfide