Dresden 2009 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 26: Poster II

DY 26.9: Poster

Donnerstag, 26. März 2009, 16:00–18:00, P1A

Frustration in quasi-periodic potentials — •Christian Richter, Michael Schmiedeberg, and Holger Stark — Institut für Theoretische Physik, Technische Universität Berlin, 10632 Berlin, Germany

We study a two-dimensional colloidal suspension in a one-dimensional quasi-periodic potential. By using Brownian dynamics simulations, we observe a phase transition from a liquid phase into a frustrated solid state that is not periodic or crystalline. We determine the transition by carefully analyzing the dynamics of the system, for example the mean square displacement of the particles. One of our major goals is to search for possible quasicrystalline order and for order parameters that may describe the structure of the frustrated state. We also compare the system to other frustrated systems, e.g., glasses.