Self-Diffusion in Random-Tiling Quasicrystals
摘要
The first explicit realization of the conjecture that phason dynamics leads to self-diffusion in quasicrystals is presented for the icosahedral Ammann tilings. On short time scales, the transport is found to be subdiffusive with the exponent , while on long time scales it is consistent with normal diffusion that is up to an order of magnitude larger than in the typical room temperature vacancy-assisted self-diffusion. No simple finite-size scaling is found, suggesting anomalous corrections to normal diffusion, or existence of at least two independent length scales.
引用
@article{arxiv.cond-mat/9408048,
title = {Self-Diffusion in Random-Tiling Quasicrystals},
author = {M V Jaric and E S Sorensen},
journal= {arXiv preprint arXiv:cond-mat/9408048},
year = {2009}
}
备注
11 pages + 2 figures, COMPRESSED postscript figures available by anonymous ftp to black_hole.physics.ubc.ca directory outgoing/diffuse (use bi for binary mode to transfer), REVTeX 3.0, CTP-TAMU 21/94