Premium
On the Dispersion Relation of Carriers in Semimetallic BiSb Alloys
Author(s) -
Jung Th.,
Braune W.
Publication year - 1980
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/pssb.2220970221
Subject(s) - condensed matter physics , deformation (meteorology) , electronic band structure , dispersion relation , electron , simple (philosophy) , dispersion (optics) , fermi surface , materials science , fermi gamma ray space telescope , physics , quantum mechanics , philosophy , epistemology , composite material
An investigation is made of the descriptive power of the semi‐empirical k · p models and of the deformation models of the band structure of semimetallic BiSb alloys. Using simple k · p models it can be shown that for x > 3 ( x in at% Sb) the Fermi surface of the electrons assumes an ellipsoidal shape, whereas for the concentration dependence of the energy gap E gL one obtains a result which appears unrealistic. An application of models of the band structure on the basis of the deformation theory shows that if more than two bands are taken into account it is possible to obtain a concentration dependence of E gL , the essential properties of which are in agreement with the hitherto existing concepts.