Title

Viscoelasticity from a Microscopic Model of Dislocation Dynamics

Author(s)/Creator(s)

M. Cristina Marchetti, Syracuse UniversityFollow
Karl Saunders, Syracuse University

Document Type

Article

Date

2-1-2008

Keywords

condensed matter, soft condensed matter, statistical mechanics

Language

English

Disciplines

Physics

Description/Abstract

It is shown that the dynamics of a two-dimensional crystal with a finite concentration of dislocations, as well as vacancy and interstitial defects, is governed by the hydrodynamic equations of a viscoelastic medium. At the longest length scales the viscoelasticity is described by the simplest Maxwell model, whose shear and compressional relaxation times are obtained in terms of microscopic quantities, including the density of free dislocations. At short length scales, bond orientational order effects become important and lead to wavevector dependent corrections to the relaxation times.

Additional Information

This manuscript is from arXiv.org, to gain additional information visit http://arxiv.org/abs/cond-mat/0205024

Recommended Citation

arXiv:cond-mat/0205024v1

Source

harvested from arXiv.org