Two-Dimensional Diffusion in the Presence of Topological Disorder

Abstract

How topological defects affect the dynamics of particles hopping between lattice sites of a distorted, two-dimensional crystal is addressed. Perturbation theory and numerical simulations show that weak, short-ranged topological disorder leads to a finite reduction of the diffusion coefficient. Renormalization group theory and numerical simulations suggest that longer-ranged disorder, such as that from randomly placed dislocations or random disclinations with no net disclinicity, leads to subdiffusion at long times.

arXiv comment10 pages, 6 figures

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Cited by in corpus (3)

• Topological kinematic constraints: quantum dislocations and the glide principle
• Trapping reactions with subdiffusive traps and particles characterized by different anomalous diffusion exponents
• The target problem with evanescent subdiffusive traps