Inverse-photoemission spectroscopy of GaSe and InSe
- 15 April 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 49 (16), 11093-11099
- https://doi.org/10.1103/physrevb.49.11093
Abstract
The lamellar semiconductors GaSe and InSe have been studied with k-resolved inverse-photoemission spectroscopy along two major symmetry directions (Γ¯ K¯ and Γ¯ M¯) of the surface Brillouin zone. Three bands with well-resolved features are observed from which the dispersion of the conduction bands can be determined with good precision. The minimum of the conduction band is found at M¯ in GaSe and at Γ¯ in InSe. These results are compared with theoretical studies using pseudopotential and tight-binding calculations.Keywords
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