First-principle calculations of the linear optical properties of the nonpolar (110) surface of cubic Boron and Gallium Nitride are presented. We analyze the reflectance anisotropy (RA) spectra in relation to the better known spectrum of the GaAs(110) surface and to the existing tight-binding results for GaN(110). Previous results for the RA spectrum of GaN(110) obtained in tight-binding scheme are confirmed. The present first ab-initio results for BN(110) show the important role played by surface states transitions at the onset of the RA spectrum.
Ab-initio optical properties of BN(110) and GaN(110) surfaces / G. Cappellini, G. Satta, M. Palummo, G. Onida - In: EPIOPTICS 7 : proceedings of the 24. course of the International School of Solid State Physics : Erice, Sicily, Italy, 20–26 July 2002 / [a cura di] A. Cricenti. - [s.l] : Springer, 2004. - ISBN 978-981-238-710-3. - pp. 44-51 (( Intervento presentato al 7. convegno Epioptics workshop tenutosi a Erice, Italy nel 2002 [10.1142/9789812702982_0004].
Ab-initio optical properties of BN(110) and GaN(110) surfaces
G. OnidaUltimo
2004
Abstract
First-principle calculations of the linear optical properties of the nonpolar (110) surface of cubic Boron and Gallium Nitride are presented. We analyze the reflectance anisotropy (RA) spectra in relation to the better known spectrum of the GaAs(110) surface and to the existing tight-binding results for GaN(110). Previous results for the RA spectrum of GaN(110) obtained in tight-binding scheme are confirmed. The present first ab-initio results for BN(110) show the important role played by surface states transitions at the onset of the RA spectrum.
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