Oncel Nuri, Çakır Deniz, Dil J Hugo, Slomski Bartosz, Landolt Gabriel
Department of Physics and Astrophysics, University of North Dakota, Grand Forks.
J Phys Condens Matter. 2014 Jul 16;26(28):285501. doi: 10.1088/0953-8984/26/28/285501. Epub 2014 Jun 19.
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.