Dimer diffusion in a washboard potential

被引：44

作者：

Heinsalu, E. ^{[1
]}

Patriarca, M. ^{[1
]}

Marchesoni, F. ^{[2
]}

机构：

[1] Univ Tartu, Inst Theoret Phys, EE-51010 Tartu, Estonia

[2] Univ Camerino, Dipartimento Fis, I-62032 Camerino, Italy

来源：

PHYSICAL REVIEW E | 2008年 / 77卷 / 02期

关键词：

SURFACE-DIFFUSION; IR-X; CLUSTERS; DYNAMICS; PARTICLE; BEHAVIOR; MOTION; MODEL; ATOMS; JUMP;

D O I：

10.1103/PhysRevE.77.021129

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The transport of a dimer, consisting of two Brownian particles bounded by a harmonic potential, moving on a periodic substrate is investigated both numerically and analytically. The mobility and diffusion of the dimer center of mass present distinct properties when compared with those of a monomer under the same transport conditions. Both the average current and the diffusion coefficient are found to be complicated nonmonotonic functions of the driving force. The influence of dimer equilibrium length, coupling strength, and damping constant on the dimer transport properties are also examined in detail.

引用

页数：7

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