Optical Constants and Electronic Structure of Crystalline and Amorphous As2S3 in the 3 to 35 eV Range
- 1 April 1974
- journal article
- research article
- Published by Wiley in Physica Status Solidi (b)
- Vol. 62 (2) , 343-350
- https://doi.org/10.1002/pssb.2220620202
Abstract
By Kramers‐Kronig analysis, the complex dielectric constant tensor of monocrystalline As2S3 is deduced from energy losses in the 3 to 35 eV range suffered by a 40 keV electron beam. The weak optical anisotropy observed in this spectral range is explained and the results are discussed in terms of a valence bonding model with two groups of valence bands. Upon the amorphous to crystalline transition it is the optical transitions originating in the resonance bonds which are only influenced.Keywords
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