https://doi.org/10.1007/s100510051086
The interplay between the surface band structure and possible surface reconstructions of Mo(112)
1
Department of Physics and Astronomy, and the Center for Materials Research and Analysis,
University of Nebraska, Lincoln, Nebraska 68588-0111, USA
2
Surface Science Research Center, University of Liverpool, Liverpool L69-3BX, UK
3
Surface Science Research Center and Department of Physics, University of Liverpool, Liverpool
L69-3BX, UK
Received:
3
March
1999
Revised:
1
October
1999
Published online: 15 April 2000
The experimental band structure of Mo(112) and the effects by temperature and
adsorbate are presented. A surface resonance, identified as crossing the Fermi level at
about 1/3 from 
to 
of surface Brillouin zone, was observed to be very sensitive
to both contamination and temperature. We find evidence of adsorbate and temperature
induced reconstruction of the Mo(112) surface. Examination of low-energy electron
diffraction (LEED) and scanning tunneling microscopy (STM) data provides evidence for
an adsorbate induced reconstruction of the Mo(112) surface with periodicities consistent
with the Fermi level crossing of the surface resonance. The reconstruction is found to
occur at coverages as low as 0.03 Langmuirs of oxygen or carbon. The reconstruction
and/or adsorbate affects the density of states and bands near the Fermi level of a1
symmetry.
PACS: 61.10.-i – X-ray diffraction and scattering / 68.35.-p – Solid surfaces and solid-solid interfaces / 73.20.-r – Surface and interface electron states
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
