Kick-induced rectified current in a symmetric nanoelectromechanical shuttle

We have studied the rectified current in a geometrically symmetric nano-electromechanical shuttle with periodic kicks and sinusoidal ac bias voltages. The is exactly zero under geometrical symmetry which generated by electrons transferred from source to drain electrodes through movable shuttle. investigate nonzero currents regular motion of time-translational broken. shuttle, moreover, becomes chaotic same mechanism kicked rotor generates scattered as increasing kick strength. point out that time-translational-symmetry breaking instantaneous an important role manipulation current.