Origin of 18-fold quasicrystal

13th International Conference on Quasicrystals

Bekku, S.^1 ; Ziherl, P.^2,3 ; Dotera, T.^1

Department of Physics, Kinki University, 3-4-1 Kowakae, Higashi-Osaka

577-8502, Japan^1

Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, Ljubljana

SI-1000, Slovenia^2

Joef Stefan Institute, Jamova 39, Ljubljana

SI-1000, Slovenia^3

关键词: Bond orientational orders;    Hard cores;    Vertex configurations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/809/1/012003/pdf
DOI  :  10.1088/1742-6596/809/1/012003

来源: IOP

【 摘 要 】

We investigate the origin of the 18-fold symmetry in quasicrystals. We perform Monte Carlo simulations of 2D disks interacting with the hard-core/square-shoulder potential, and we analyze the bond-orientational order and the local vertex configurations. We find that the so-called special clusters of particles play a crucial role in the mixing of the three sets of bond directions 20° apart, producing the 18-fold diffraction pattern.