Resonant escape over an oscillating barrier in single-electron ratchet transfer

Abstract

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.

4 pages, 5 figures

References in corpus (3)

• Artificial Brownian motors: Controlling transport on the nanoscale
• Coherent Signal Amplification in Bistable Nanomechanical Oscillators by Stochastic Resonance
• Single-parameter non-adiabatic quantized charge pumping

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