Anisotropies in the Above—Band-Gap Optical Spectra of Cubic Semiconductors
- 29 April 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 54 (17), 1956-1959
- https://doi.org/10.1103/physrevlett.54.1956
Abstract
We report the first systematic study of above—band-gap optical anisotropies in cubic semiconductors. The anisotropies are large, of the order of 1%. The dominant intrinsic contributions for (110) Si and Ge are due to surface many-body screening and bulk spatial dispersion. Extrinsic contributions from chemisorbed and physisorbed species also play important roles.Keywords
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