title: Periodic average structures of colloidal quasicrystals.
abstract: We experimentally study the phase behaviour of a charge-stabilized two-dimensional colloidal monolayer which is subjected to a one-dimensional quasiperiodic substrate potential. Upon increasing the laser intensity, we observe a transition from a periodic to a quasiperiodic state. It proceeds via the formation of an intermediate periodic average structure (PAS) which is related to the quasiperiodic lattice by a bounded 1-1 mapping. Because PAS can transform to crystals and quasicrystals by minute particle displacements, they provide a mechanism to allow for interesting insights into the relationship between periodic and quasiperiodic order.
authors.affiliation: 2. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany. c.bechinger@physik.uni-stuttgart.de.
authors.forename: Lamiss
authors.initials: L
authors.lastname: Zaidouny
authors.forename: Thomas
authors.initials: T
authors.lastname: Bohlein
authors.forename: Johannes
authors.initials: J
authors.lastname: Roth
authors.forename: Clemens
authors.initials: C
authors.lastname: Bechinger