Is the Observed Photoemission Peak near the Fermi Level on the (100) Face of Mo a Surface State?

Is the Observed Photoemission Peak near the Fermi Level on the (100) Face of Mo a Surface State?

By use of synchroton radiation in the range 12 to 40 eV, angle-resolved photoemission spectra of the (100) Mo surface have been observed which exhibit a sharp peak near the Fermi level. This structure points strongly in the normal direction, it is very sensitive to surface contamination, and its pos...

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Veröffentlicht in:Phys. Rev. Lett.; (United States) 1977-05, Vol.38 (20), p.1171-1174
Hauptverfasser: Noguera, C., Spanjaard, D., Jepsen, D., Ballu, Y., Guillot, C., Lecante, J., Paigne, J., Petroff, Y., Pinchaux, R., Thiry, P., Cinti, R.
Format: Artikel
Sprache:eng
Schlagworte:
360102 - Metals & Alloys- Structure & Phase Studies
ANGULAR DISTRIBUTION
BREMSSTRAHLUNG
D STATES
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELECTRONIC STRUCTURE
ELEMENTS
EMISSION
ENERGY LEVELS
ENERGY RANGE
ENERGY SPECTRA
EV RANGE
EV RANGE 10-100
FERMI LEVEL
MATERIALS SCIENCE
METALS
MOLYBDENUM
PHOTOEMISSION
RADIATIONS
REFRACTORY METALS
SECONDARY EMISSION
SPECTRA
SURFACES
SYNCHROTRON RADIATION
TRANSITION ELEMENTS
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Zusammenfassung:By use of synchroton radiation in the range 12 to 40 eV, angle-resolved photoemission spectra of the (100) Mo surface have been observed which exhibit a sharp peak near the Fermi level. This structure points strongly in the normal direction, it is very sensitive to surface contamination, and its position does not change with photon energy. A similar peak has been attributed in the past to a surface state. We show that it is most likely due to a combination of a surface resonance and a d-band edge on both experimental and theoretical grounds.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.38.1171