title: Azobenzene on Cu(110): adsorption site-dependent diffusion.
abstract: Azobenzene and its derivatives can undergo reversible trans-cis isomerizations when irradiated with light, making them potential candidates for optically sensitive materials and devices. The adsorption and diffusion of azobenzene on the Cu(110) surface was investigated with a variable-temperature scanning tunneling microscope. The trans-isomer was observed and found to occupy two adsorption geometries-an energetically stable and a metastable state. Diffusion occurred along the closed-packed [1 -1 0] direction of the surface, and the diffusivity for the two adsorption states was found to differ by approximately 1 order of magnitude.
authors.affiliation: Institut National de la Recherche Scientifique-Energie, Matériaux et Télécommunications, Université du Québec, Varennes, Québec J3X 1S2, Canada.
authors.forename: Jill A
authors.initials: JA
authors.lastname: Miwa
authors.forename: Sigrid
authors.initials: S
authors.lastname: Weigelt
authors.forename: Henkjan
authors.initials: H
authors.lastname: Gersen
authors.forename: Flemming
authors.initials: F
authors.lastname: Besenbacher
authors.forename: Federico
authors.initials: F
authors.lastname: Rosei
authors.forename: Trolle R
authors.initials: TR
authors.lastname: Linderoth