Tight-binding representation of the optical matrix elements: Theory and applications

1993/06/15 by L. C. Lew Yan Voon, L. R. Ram-Mohan, L. R. Ram‐Mohan · 2 citations
Engineering · Physics and Astronomy · #Advanced Semiconductor Detectors and Materials #Photorefractive and Nonlinear Optics #Semiconductor Quantum Structures and Devices

paper · doi:10.1103/physrevb.47.15500

openalex publication_date 1993/06/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29

Abstract

We have derived new expressions for the interband optical matrix elements of crystalline solids, applicable when the k-space Hamiltonian is known. The formalism does not require a complete knowledge of the electronic states and is hence useful for empirical band-structure calculations. We find that no additional parameters, other than those present in the Hamiltonian, are required. The accuracy of the results obtained from different tight-binding parameter sets for the GaAs/AlAs system for bulk semiconductors and heterostructures is compared.

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