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Ab initio calculations of the anisotropic dielectric tensor of GaAs/AlAs superlattices

Authors: S. Botti, N. Vast, L. Reining, V. Olevano, and L.C. Andreani

Ref.: Phys. Rev. Lett. 89, 216803 (2002)

Abstract: The static dielectric properties of (001)(GaAs)p/(AlAs)p superlattices have been calculated as a function of their period p for 1≤p≤12, starting from density-functional theory. The interplay between quantum confinement and local field effects is shown to be crucial. For light polarized in the growth direction it leads to the otherwise surprising justification of the use of a classical effective medium theory, even for the smallest periods. Only the inclusion of both contributions allows in ab initio and in semiempirical calculations to reproduce the experimentally observed birefringence.

Citations: 33 (Google scholar)

DOI: 10.1103/PhysRevLett.89.216803

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Bibtex:

@article{Botti_2002,
	doi = {10.1103/physrevlett.89.216803},
	url = {https://doi.org/10.1103%2Fphysrevlett.89.216803},
	year = 2002,
	month = {nov},
	publisher = {American Physical Society ({APS})},
	volume = {89},
	number = {21},
	author = {Silvana Botti and Nathalie Vast and Lucia Reining and Valerio Olevano and Lucio Claudio Andreani},
	title = {Ab {InitioCalculations} of the Anisotropic Dielectric Tensor {ofGaAs}/{AlAsSuperlattices}},
	journal = {Physical Review Letters}
}