Eur. Phys. J. B (2015) 88: 134
https://doi.org/10.1140/epjb/e2015-60287-x

Regular Article

A biharmonic drive induces negative mobility at relatively high temperature

Department of Physics, Yunnan University, Kunming 650091, P.R. China

^a e-mail: lcdu@ynu.edu.cn

Received: 13 April 2015
Received in final form: 21 April 2015
Published online: 25 May 2015

Abstract

An inertial Brownian motor under the influence of a biased biharmonic signal is investigated numerically. For a finite positive bias force, the maximized negative current occurs at a relatively large noise intensity (D = 0.01), while the magnitude of the anomalous velocity is also very large (greater than 1.5). This result means one can observe remarkably abnormal transport behaviors at relatively high temperature by means of a biharmonic drive.