The invariant expansions of the effective-mass Hamiltonian at the W point of fcc crystals including strain interactions are presented for the space groups Fm3m (O(h)5), Fd3m (O(h)7), and F43mBAR (T(d)2). The intervalley and intravalley splittings induced by uniaxial stress along high-symmetry directions are derived for both phonon and electron spectra. Relevant parameters for the electronic bands of germanium near W are calculated with the ab initio linear-muffin-tin-orbital method.
SYMMETRY AND STRAIN-INDUCED EFFECTS AT THE W-POINT OF THE BRILLOUIN-ZONE OF FACE-CENTERED-CUBIC CRYSTALS
LA ROCCA, Giuseppe Carlo;
1991
Abstract
The invariant expansions of the effective-mass Hamiltonian at the W point of fcc crystals including strain interactions are presented for the space groups Fm3m (O(h)5), Fd3m (O(h)7), and F43mBAR (T(d)2). The intervalley and intravalley splittings induced by uniaxial stress along high-symmetry directions are derived for both phonon and electron spectra. Relevant parameters for the electronic bands of germanium near W are calculated with the ab initio linear-muffin-tin-orbital method.File in questo prodotto:
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