A dynamical transition of a chain of charged particles in a 2D substrate potential  

作　　者：Xiao-Ping Yuan Li-Yan Qiao Xia Huang 

机构地区：[1]Information Engineering School,Hangzhou Dianzi University,Hangzhou 310018,China [2]Department of Physics,Hangzhou Dianzi University,Hangzhou 310018,China [3]School of Mathematics and Physics,North China Electric Power University,Beijing 102206,China

出　　处：《Communications in Theoretical Physics》2020年第7期116-122,共7页理论物理通讯（英文版）

基　　金：Zhejiang Province Commonweal Projects(Grant No.LGF18A050001);China Scholarship Council(Grant No.201708330401);National Natural Science Foundation of China(Grant No.11605055);Fundamental Research Funds for the Central Universities of China(Grant No.2017MS054)。

摘　　要：The transport of a chain of charged particles with a transverse degree of freedom is investigated in a 2D asymmetric potential.Here,the energy of the periodic driving force is converted into motion in the vertical direction.The analysis exhibits a transition from stick-slip motion to periodic oscillation.The chain velocity can be controlled to an optimized value by adjusting system parameters,such as the amplitude and frequency of the periodic force.The existence of a resonance platform indicates resonance between the motion of the chain and the periodic force as coupling strength increases adiabatically.The atomic configuration and the transverse degree of freedom also play key roles in the control.

关 键 词：collective transport driven Frenkel–Kontorova model cooperative ratchet 

分 类 号：O48[理学—固体物理]