title: Low-temperature ultrafast mobility in systems with long-range repulsive interactions: Pb/Si(111).
abstract: A realization of the numerous phases predicted in systems with long-range repulsive interactions was recently found in Pb/Si(111). Surprisingly, these numerous phases can be grown at low temperatures approximately 40 K over macroscopic distances. This unusual observation can be explained from theoretical calculations of the collective diffusion coefficient D(c) in systems with long-range repulsive interactions. Instead of a gradual dependence of D(c) on coverage, it was found that D(c) has sharp maxima at low temperatures for every stable phase (i.e., for every rational value of the coverage theta=p/q) in agreement with the experiment.
authors.affiliation: Department of Physics, Iowa State University, Ames, IA 50011, USA.
authors.forename: M
authors.initials: M
authors.lastname: Yakes
authors.forename: M
authors.initials: M
authors.lastname: Hupalo
authors.forename: M A
authors.initials: MA
authors.lastname: Zaluska-Kotur
authors.forename: Z W
authors.initials: ZW
authors.lastname: Gortel
authors.forename: M C
authors.initials: MC
authors.lastname: Tringides