title: Role of surface elastic relaxations in an O-induced nanopattern on Pt(110)-(1 x 2).
abstract: Scanning tunneling microscopy shows that a nanopattern forms as the Pt(110)-(1 x 2) surface is exposed to oxygen at room temperature or above. The nanopattern consists of [11[over]0] oriented O-induced stripes assembling into a (11 x 2) superstructure at high O coverage. The stripes form because the O adsorption energy increases by expanding the Pt lattice along the ridges of the surface as compared to the bulk. From interplay with density functional theory calculations, we show that the O-induced nanoscale periodicity is caused by short-ranged elastic relaxations confined to the surface.
authors.affiliation: Department of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), University of Aarhus, DK-8000 Aarhus C, Denmark.
authors.forename: S
authors.initials: S
authors.lastname: Helveg
authors.forename: W X
authors.initials: WX
authors.lastname: Li
authors.forename: N C
authors.initials: NC
authors.lastname: Bartelt
authors.forename: S
authors.initials: S
authors.lastname: Horch
authors.forename: E
authors.initials: E
authors.lastname: Laegsgaard
authors.forename: B
authors.initials: B
authors.lastname: Hammer
authors.forename: F
authors.initials: F
authors.lastname: Besenbacher