Dynamics of particle flips in two-dimensional quasicrystals

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autorinnen und Autoren: Engel M, Trebin HR, Umezaki M, Odagaki T
Zeitschrift: Physical Review B
Verlag: American Physical Society
Jahr der Veröffentlichung: 2010
Band: 82
Heftnummer: 13
ISSN: 1098-0121
Sprache: Englisch


The dynamics of quasicrystals is more complicated than the dynamics of periodic solids and difficult to study in experiments. Here, we investigate a decagonal and a dodecagonal quasicrystal using molecular dynamics simulations of the Lennard-Jones-Gauss interaction system. We observe that the short-time dynamics is dominated by stochastic particle motion, so-called phason flips, which can be either single-particle jumps or correlated ringlike multi-particle moves. Over long times, the flip mechanism is efficient in reordering the quasicrystals and can generate diffusion. The temperature dependence of diffusion is described by an Arrhenius law. We also study the spatial distribution and correlation of mobile particles by analyzing the dynamic propensity.

FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Engel, Michael Prof. Dr.
Lehrstuhl für Multiscale Simulation of Particulate Systems

Einrichtungen weiterer Autorinnen und Autoren

Kyushu University / 九州大学
Universität Stuttgart
University of Electro-Communications / 電気通信大学 (Denki-Tsūshin Daigaku)


Engel, M., Trebin, H.-R., Umezaki, M., & Odagaki, T. (2010). Dynamics of particle flips in two-dimensional quasicrystals. Physical Review B, 82(13). https://dx.doi.org/10.1103/PhysRevB.82.134206

Engel, Michael, et al. "Dynamics of particle flips in two-dimensional quasicrystals." Physical Review B 82.13 (2010).


Zuletzt aktualisiert 2018-08-08 um 12:23