Angle-resolved synchrotron photoemission and density functional theory on the iridium modified Si(111) surface

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 root 7 x root 7 -R19.1 degrees 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 `1x1' 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.


Published in:
JOURNAL OF PHYSICS-CONDENSED MATTER, 26, 28
Year:
2014
ISSN:
0953-8984
Laboratories:




 Record created 2015-06-23, last modified 2018-01-28


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