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- HAKANSSON, MC, et al.
(author)
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PHOTOEMISSION-STUDY OF THE BAND-GAP ON CESIATED GE(111)1X1-AS
- 1995
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In: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 52:16, s. 11646-11649
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Journal article (peer-reviewed)abstract
- Deposition of small amounts of cesium on the As-terminated Ge(111) surface results in population of the lowest unoccupied surface state centered around the Gamma point in the surface Brillouin zone. By using angle-resolved photoemission we have directly determined the gap between this state and the lone-pair surface state to be 0.85 eV. This result provides support for recent quasiparticle band-structure calculations.
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