Rectification and phase locking of graphite
Zhen-Bin Zhang , Ru-Juan Jia , Jasmina Tekić , Yang Yang , Cang-Long Wang , Jia-Wei Li , Xiao-Yun Wang , Wen-Shan Duan , Lei Yang
Front. Phys. ›› 2015, Vol. 10 ›› Issue (4) : 100506
Rectification and phase locking of graphite
Rectification phenomena and the phase locking in a two-dimensional overdamped Frenkel–Kontorova model with a graphite periodic substrate were studied. The presence of dc and ac forces in the longitudinal direction causes the appearance of dynamicalmode locking and the steps in the response function of the system. On the other hand, the presence of an ac force in the transverse direction causes the appearance of rectification, even though there is no net dc force in the transverse direction. It is found that whereas the longitudinal velocity increases in a series of steps, rectification in the transverse direction can occur only between two neighbor steps. The amplitude and phase of the external ac driving force affect the depinning force, rectification of the system and particles trajectories.
classical transport / friction and lubrication / computer simulation of molecular and particle dynamics
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Higher Education Press and Springer-Verlag Berlin Heidelberg
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