Generalized kp perturbation theory for atomic-scale superlattices

H. Yi and M. Razeghi
Phys. Rev. B 56, 3933 – Published 15 August 1997
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Abstract

We present a generalized kp perturbation method that is applicable for atomic-scale superlattices. The present model is in good quantitative agreement with full band theories with local-density approximation, and approaches results of the conventional kp perturbation method (i.e., Kane’s Hamiltonian) with the envelope function approximation for superlattices with large periods. The indirect band gap of AlAs/GaAs superlattices with short periods observed in experiments is explained using this method.

  • Received 6 March 1997

DOI:https://doi.org/10.1103/PhysRevB.56.3933

©1997 American Physical Society

Authors & Affiliations

H. Yi and M. Razeghi

  • Center for Quantum Devices, Northwestern University, Evanston, Illinois 60201

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Issue

Vol. 56, Iss. 7 — 15 August 1997

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