Least-action principle for envelope functions in abrupt heterostructures
- A. F. Ioffe Physico-Technical Institute, 194021, St.-Petersburg (Russian Federation)
- Department of Mathematics, University of Geneva, 1211 Geneva (Switzerland)
We apply the envelope function approach to abrupt heterostructures starting with the least-action principle for the microscopic wave function. The interface is treated nonperturbatively, and our approach is applicable to mismatched heterostructure. We obtain the interface connection rules for the multiband envelope function and the multiband heterostructure Hamiltonian from the k{center_dot}p version of the variational principle. The k{center_dot}p heterostructure Hamiltonian contains the short-range interface terms which consist of two physically distinct contributions. The first one depends only on the structure of the interface, and the second one is completely determined by the bulk parameters. We discover new structure inversion asymmetry terms and new magnetic energy terms important in spintronic applications.
- OSTI ID:
- 20788007
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 73, Issue 11; Other Information: DOI: 10.1103/PhysRevB.73.115312; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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