J Phys Condens Matter. 2013 Nov 06;25(44):445004. doi: 10.1088/0953-8984/25/44/445004. Epub 2013 Sep 20.

Iridium-modified Si(111) surface.

Journal of physics. Condensed matter : an Institute of Physics journal

Dylan Nicholls, Nuri Oncel

PMID: 24056059 DOI: 10.1088/0953-8984/25/44/445004

Abstract

The physical and electronic properties of Ir-modified Si(111) surface have been investigated with the help of STM (scanning tunneling microscopy) and LEED (low energy electron diffraction). The LEED pattern of the surface exhibits [Formula: see text] reconstruction. STM images show that [Formula: see text]° reconstruction originates from the Ir-ring clusters. STS (scanning tunneling spectroscopy) measurements on the ring clusters reveal a state located about 0.3 eV below the Fermi level. A careful analysis shows that this state originates from [Formula: see text]° domains of Ir-modified Si(111) surface.

Publication Types

• Journal Article
• Research Support, Non-U.S. Gov't
• Research Support, U.S. Gov't, Non-P.H.S.