Least action principle for envelope functions in abrupt heterostructures

Details Least action principle for envelope functions in abrupt heterostructures Least action principle for envelope functions in abrupt heterostructures

2005-04-20

arxiv.org/abs/cond-mat/0504496v1

Physics

Condensed Matter

Materials Science

4 pages, 1 figure

Scientific paper

10.1103/PhysRevB.73.115312

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 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.

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