Multiple current reversals and giant vibrational resonance in a high-frequency modulated periodic device
1 Department of Physics, Yunnan University - Kunming 650091, China
2 Department of Physics, Kunming University - Kunming 650214, China
Received: 12 May 2016
Accepted: 8 September 2016
A deterministic optical rocking ratchet driven by both high-and low-frequency signals is investigated. First, the phenomenon of multiple current reversals is observed by tuning the amplitude of the high-frequency forcing. Additionally, the giant vibrational resonance arises where the amplitude of the weak low-frequency signal is amplified by several orders of magnitude. The relationship between the multiple current reversals and the giant vibrational resonance is revealed by a high-frequency renormalization mechanism.
PACS: 05.60.Cd – Classical transport / 05.90.+m – Other topics in statistical physics, thermodynamics, and nonlinear dynamical systems (restricted to new topics in section 05)
© EPLA, 2016