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Generalized superlattice K·p theory and intersubband optical transitions

1996
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Physical Review B (Condensed Matter)
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The eight-band superlattice crystal K•p formalism is extended to include the higher-lying antibonding p states perturbatively. The initial 14ϫ14 Hamiltonian matrix is block diagonalized ͑or folded down͒ so that corrections due to these states appear in the modified 8ϫ8 matrix. Their principal effect is to introduce a finite heavy-hole mass. The use of the eight-band formalism for band-structure and interband optical calculations is validated because other corrections are very small. The

doi:10.1103/physrevb.53.1963
pmid:9983658
fatcat:do376rc2mbfp3oxptbg5i23gqe