F-sum rule and effective masses in superlattices

N. F. Johnson; H. Ehrenreich; K. C. Hass; T. C. McGill

doi:10.1103/PhysRevLett.59.2352

F-sum rule and effective masses in superlattices

N. F. Johnson, H. Ehrenreich, K. C. Hass, T. C. McGill

Physics

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

The f-sum rule, relating effective masses to oscillator strengths, is extended to semiconducting superlattices and applied to GaAs-(Ga,Al)As and HgTe-CdTe. This novel approach is implemented analytically by use of the envelope-function approximation to calculate both parallel and perpendicular masses and is used to account for their difference physically. Agreement with experiment is excellent, but in HgTe-CdTe only if the valence-band offset is small.

Original language	English (US)
Pages (from-to)	2352-2355
Number of pages	4
Journal	Physical Review Letters
Volume	59
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.59.2352
State	Published - Jan 1 1987

ASJC Scopus subject areas

Physics and Astronomy(all)

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