title: Angle-resolved synchrotron photoemission and density functional theory on the iridium modified Si(1 1 1) surface.
abstract: The physical and electronic properties of the Ir modified Si(1 1 1) surface have been investigated with the help of angle resolved photoemission spectroscopy and density functional theory. The surface consists of Ir-ring clusters that form a [Formula: see text]reconstruction. A comparison between the measured and calculated band structure of the system reveals that the dispersions of the projected bulk states and the states originating from [Formula: see text] domains are heavily modified due to Umklapp scattering from the surface Brillouin zone. Density of states calculations show that Ir-ring clusters contribute to the states in the vicinity of the Fermi level.
authors.affiliation: Department of Physics and Astrophysics, University of North Dakota, Grand Forks.
authors.forename: Nuri
authors.initials: N
authors.lastname: Oncel
authors.forename: Deniz
authors.initials: D
authors.lastname: Çakır
authors.forename: J Hugo
authors.initials: JH
authors.lastname: Dil
authors.forename: Bartosz
authors.initials: B
authors.lastname: Slomski
authors.forename: Gabriel
authors.initials: G
authors.lastname: Landolt
mesh_terms: D003198:Computer Simulation; D007495:Iridium / Q000737:chemistry*; D008027:Light; D008956:Models, Chemical; D012542:Scattering, Radiation; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties; D017356:Synchrotrons
chemical_list: D007495:Iridium; D012825:Silicon