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The Band Structure of Z‐like Quantum Wires
Author(s) -
Dupertuis M.A.,
Marti D.,
Michelini F.
Publication year - 2002
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200211)234:1<329::aid-pssb329>3.0.co;2-f
Subject(s) - degenerate energy levels , asymmetry , valence band , inversion (geology) , semiconductor , condensed matter physics , diamond , quantum , valence (chemistry) , electronic band structure , physics , quantum mechanics , materials science , band gap , paleontology , structural basin , composite material , biology
We analyze the electronic properties of quantum wires with a Z‐like profile within four‐band models for the valence band of a semiconductor of diamond and zinc blende type. Group‐theoretical considerations show that the valence‐band structure is doubly degenerate only when the linear k ‐terms (coming e.g. from the bulk crystal inversion asymmetry) are neglected. The considerations apply to the more general case of a profile containing a 2D center of inversion.