Resonance and Rectification in a Two-Dimensional Frenkel–Kontorova Model with Triangular Symmetry
YANG Yang1, WANG Cang-Long1,2, DUAN Wen-Shan1**, CHEN Jian-Min3
1College of Physics and Electronic Engineering,Northwest Normal University, Lanzhou 730070 2Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 3State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000
Resonance and Rectification in a Two-Dimensional Frenkel–Kontorova Model with Triangular Symmetry
YANG Yang1, WANG Cang-Long1,2, DUAN Wen-Shan1**, CHEN Jian-Min3
1College of Physics and Electronic Engineering,Northwest Normal University, Lanzhou 730070 2Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 3State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000
摘要The mode-locking phenomena in the dc- and ac-driven overdamped two-dimensional Frenkel–Kontorova model with triangular symmetric structures are studied. The obtained results show that the transverse velocity <vx> increases in a series of quantized steps nμx (n=0, 1, 2, 3 ⋅⋅⋅). Moreover, the positive or negative rectification of longitudinal velocity <vy> can occur when n is an odd number. It is also found in our simulations that the critical depinning force oscillates with the amplitude of ac-driven force, i.e., the system is dominated by the ac-driven force. The oscillatory behavior is strongly determined by the initial phase of ac force.
Abstract：The mode-locking phenomena in the dc- and ac-driven overdamped two-dimensional Frenkel–Kontorova model with triangular symmetric structures are studied. The obtained results show that the transverse velocity <vx> increases in a series of quantized steps nμx (n=0, 1, 2, 3 ⋅⋅⋅). Moreover, the positive or negative rectification of longitudinal velocity <vy> can occur when n is an odd number. It is also found in our simulations that the critical depinning force oscillates with the amplitude of ac-driven force, i.e., the system is dominated by the ac-driven force. The oscillatory behavior is strongly determined by the initial phase of ac force.
YANG Yang;WANG Cang-Long;DUAN Wen-Shan**;CHEN Jian-Min
. Resonance and Rectification in a Two-Dimensional Frenkel–Kontorova Model with Triangular Symmetry[J]. 中国物理快报, 2011, 28(3): 30503-030503.
YANG Yang, WANG Cang-Long, DUAN Wen-Shan**, CHEN Jian-Min
. Resonance and Rectification in a Two-Dimensional Frenkel–Kontorova Model with Triangular Symmetry. Chin. Phys. Lett., 2011, 28(3): 30503-030503.
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