5月 26（月） 16:00～

発表者

Michael Engel (所属：University of Stuttgart, Institute for Theoretical and Applied Physics)

題目

Complex Crystals and Quasicrystals in a Simple Model System

概要

 
Complex crystals and quasicrystals are ordered states of matter with very large 
or even infinite unit cells. As a consequence, the particle dynamics differ 
significantly from what is known for simple crystals. In order to understand 
their behavior at an elementary level, we introduce a simple model system of 
identical particles moving in two dimensions. As the interaction function, a 
double-well potential, called Lennard-Jones-Gauss potential, is chosen. It 
reproduces effective potentials as found typicalyl in metals. By using
molecular dynamics simulations, it is shown that complex crystals and 
quasicrystals occur naturally in the model system. Their growth and dynamics 
is discussed and illustrated. 

      

場所

京都大学基礎物理学研究所 研究棟・講義室K102

地図 (Map)