Random Telegraph Signal in a Metallic Double-Dot System

Abstract

In this work, we investigate the dynamics of a single electron surface trap, embedded in a self-assembly metallic double-dot system. The charging and discharging of the trap by a single electron is manifested as a random telegraph signal of the current through the double-dot device. We find that we can control the duration time that an electron resides in the trap through the current that flows in the device, between fractions of a second to more than an hour. We suggest that the observed switching is the electrical manifestation of the optical blinking phenomenon, commonly observed in semiconductor quantum dots.

Origin of multi-level switching and telegraphic noise in organic nanocomposite memory devices

“…Usually, two-level random telegraph noise is characterized by estimating the characteristic times of capture/emission 37 38 . However, because the telegraphic noise of the PS:PCBM memory device showed an alternation in the multiple current states, we estimated the representative dwell time of this telegraphic noise as the average of all the dwell times (τ) for which current states maintain.…”

The conquest of middle-earth: combining top-down and bottom-up nanofabrication for constructing nanoparticle based devices

“…28,[34][35][36] Using this approach, Bar-Joseph et al in 2005 probed, for the first time, the transport properties across a single molecule that bridges two metal NPs. 37 The interest of the research community has remained on this strategy for several years, developing sophisticated synthetic approaches to build NP aggregates of controlled size in solution, 36,[38][39][40][41][42][43] and to place these proto-devices onto electrodes. [34][35][36][37][38] Bjørnholm et al developed a bottom-up approach that combines nanoparticle self-assembly and seed-growth methods to synthetize end-to-end linked gold nanorods (AuNRs).…”

“…37 The interest of the research community has remained on this strategy for several years, developing sophisticated synthetic approaches to build NP aggregates of controlled size in solution, 36,[38][39][40][41][42][43] and to place these proto-devices onto electrodes. [34][35][36][37][38] Bjørnholm et al developed a bottom-up approach that combines nanoparticle self-assembly and seed-growth methods to synthetize end-to-end linked gold nanorods (AuNRs). 44 While several procedures for the end-to-end linking of AuNRs involve modification of the already synthetized AuNRs, [45][46][47][48] Bjørnholm et al assembled spherical NPs into small aggregates (i.e.…”

Stochastic resonance in thermally bistable Josephson weak-links and micro-SQUIDs

“…This is the phenomenon of stochastic resonance (SR) that was first invoked as a plausible explanation for the periodic occurrence of 'ice ages' [1,2]. It has since been studied in several bistable systems including electronic circuits [3], mesoscopic electronic systems [4,5], lasers [6], semiconductor devices [7], nano-mechanical oscillators [8], particle traps [9], chemical systems [10] as well as in superconducting quantum interference device (SQUID) having bistability with respect to magnetic flux [11,12].…”