Superlattice <i>k⋅p</i> models for calculating electronic structure

N. F. Johnson; H. Ehrenreich; G. Y. Wu; T. C. McGill

doi:10.1103/PhysRevB.38.13095

Superlattice k⋅p models for calculating electronic structure

N. F. Johnson, H. Ehrenreich, G. Y. Wu, and T. C. McGill

Phys. Rev. B 38, 13095 – Published 15 December 1988

Abstract

A quantitative comparison is presented of two realistic superlattice k⋅p electronic structure calculations. The first is an analytic approach based on an extended bulk Kane model; the second is an extended-basis treatment, developed by McGill and collaborators, based on bulk pseudopotential calculations. Both approaches are applied to HgTe/CdTe superlattices. Energies, wave functions, effective masses, and oscillator strengths are found to agree within 10%. The limited-basis approach based on the Kane model is seen to be adequate for superlattices whose bulk constituents have direct gaps in the conduction- and valence-band regions near the superlattice band gap.

Received 6 July 1988

DOI:https://doi.org/10.1103/PhysRevB.38.13095

Authors & Affiliations

N. F. Johnson, H. Ehrenreich, and G. Y. Wu

Division of Applied Sciences, Harvard University, Cambridge, Massachusetts
Division of Applied Sciences, Harvard University, Cambridge, Massachusetts 02138

T. C. McGill

Thomas J. Watson, Sr., Laboratory of Applied Physics, California Institute of Technology, Pasadena, California 91125

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Vol. 38, Iss. 18 — 15 December 1988

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