Single-electron escape from a metastable state over an oscillating barrier is experimentally investigated in silicon-based ratchet transfer. When the barrier is oscillating on a time-scale characteristic of the single-electron escape, synchronization occurs between the deterministic barrier modulation and the stochastic escape events. The average escape time as a function of its oscillation frequency exhibits a minimum providing a primary signature for resonant activation of single electrons.
|Physical Review B - Condensed Matter and Materials Physics
|Published - 2010 Jul 22
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics