ISSN:
1063-7834
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Using the self-consistent pseudopotential method, we have calculated the binding energy of the image states for the (0001) $$(10\bar 10)$$ , and $$(11\bar 20)$$ surfaces of beryllium. It is shown for the (0001) face that there exists a pronounced resonance image state with n=1 and energy −0.95 eV at the point $$\bar \Gamma $$ of the surface Brillouin zone. In the $$(10\bar 10)$$ surface, which has a wide band gap in the vicinity of the vacuum level, the calculated image state with n=1 at the point $$\bar \Gamma $$ has energy −1.2 eV and is a surface state of gap type. For the $$(11\bar 20)$$ face in the vicinity of the point $$\bar \Gamma $$ band gaps are absent. However, the symmetry of the bulk states near the vacuum level enables the existence of a resonance image state with n=1 and energy −0.6 eV.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1134/1.1130889
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