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Ratchet effect and amplitude dependence of phase locking in a two-dimensional Frenkel-Kontorova model
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10.1063/1.4776226
/content/aip/journal/jcp/138/3/10.1063/1.4776226
http://aip.metastore.ingenta.com/content/aip/journal/jcp/138/3/10.1063/1.4776226
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic view of the 2D FK model. The red balls represent the particles. The substrate potential is shown by the gray-scale map. The letters A-J indicate the possible sites from the initial site O in a single period of ac drive. The eight nearest and next neighbors distribute in the larger and smaller blue circles, respectively.

Image of FIG. 2.
FIG. 2.

(a) and (b) Longitudinal velocity ⟨ ⟩ and transverse velocity ⟨ ⟩ vs for different , respectively. To clarify, the curves have been systematically shifted in the direction by 0.2, 0.4, and 0.6, respectively. (c) Angle ⟨θ⟩ in a single period for = 0.2.

Image of FIG. 3.
FIG. 3.

The width Δ and the critical depinning force as a function of ac amplitude, in (a) Δ , (b) , (c) Δ , and , where are plotted for the sake of comparison with Δ.

Image of FIG. 4.
FIG. 4.

The substrate potential maxima (red dots), an arbitrary particle (black dot in Fig. 4(a)), and the orbits of the particle (black line) for different amplitudes .

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/content/aip/journal/jcp/138/3/10.1063/1.4776226
2013-01-17
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ratchet effect and amplitude dependence of phase locking in a two-dimensional Frenkel-Kontorova model
http://aip.metastore.ingenta.com/content/aip/journal/jcp/138/3/10.1063/1.4776226
10.1063/1.4776226
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