Inverse photoemission studies of the (100) surface of tungsten: Clean and with adsorbed submonolayers of hydrogen

Journal Article · Wed Jul 01 00:00:00 EDT 1987 · J. Vac. Sci. Technol., A; (United States)

DOI:https://doi.org/10.1116/1.574287· OSTI ID:6512118

Krainsky, I L

The W(100) surface has been studied using k-resolved inverse photoelectron spectroscopy. Several peaks associated with unoccupied states were discovered. The energies of these peaks were mapped along the Gamma-barM-bar line of the surface Brillouin zone. Exposure of the tungsten surface to small amounts of residual hydrogen caused the tungsten surface to reconstruct to its c(2 x 2)--H structure and drastically changed the band structure which has also been mapped. The obtained experimental results confirm the theoretical notion that the energy driving this reconstruction originates from the splitting of a partially occupied surface-state band into occupied bonding and unoccupied antibonding subbands.

• Research Organization: ANALEX Corporation, Cleveland, Ohio 44135
• OSTI ID: 6512118
• Journal Information: J. Vac. Sci. Technol., A; (United States), Vol. 5:4
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HYDROGEN
ADSORPTION
TUNGSTEN
ELECTRONIC STRUCTURE
SORPTIVE PROPERTIES
SURFACE PROPERTIES
CHEMICAL BONDS
CRYSTAL STRUCTURE
ELECTRON COLLISIONS
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
SURFACE CONTAMINATION
COLLISIONS
CONTAMINATION
ELECTRON SPECTROSCOPY
ELEMENTS
EMISSION
METALS
NONMETALS
SECONDARY EMISSION
SORPTION
SPECTROSCOPY
TRANSITION ELEMENTS
360104* - Metals & Alloys- Physical Properties