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Influence of Impurities on Localized Transition Metal Surface States: Scanning Tunneling Spectroscopy on V(001)
- Source :
- Physical Review Letters. 86:2396-2399
- Publication Year :
- 2001
- Publisher :
- American Physical Society (APS), 2001.
-
Abstract
- The first scanning tunneling spectroscopy measurements on V(001) are reported. A strong surface state is detected which is very sensitive to the presence of segregated carbon impurities. The surface state energy shifts from 0.03 eV below the Fermi level at clean areas towards higher energies (up to approximately 0.2 eV) at contaminated areas. Because of the negative dispersion of this state, the upward shift cannot be described in a simple confinement picture. Rather, the surface state energy is governed by vanadium surface s- d interactions which are altered by carbon coverage.
- Subjects :
- Surface diffusion
Materials science
Metal K-edge
Scanning tunneling spectroscopy
Fermi level
General Physics and Astronomy
Spin polarized scanning tunneling microscopy
Electrochemical scanning tunneling microscope
law.invention
symbols.namesake
law
symbols
Atomic physics
Scanning tunneling microscope
Surface states
Subjects
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 86
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi.dedup.....7510510caec5d8d2d141b088b4c59f9f