Premium
The Temperature Dependence of the Energy Gap in Cd 0.22 , Hg 0.78 Te. II. Hall Effect Measurements
Author(s) -
Hlídek P.,
Grill R.,
Höschl P.,
Moravec P.,
Zvára M.
Publication year - 1993
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.2221790217
Subject(s) - hall effect , condensed matter physics , band gap , conduction band , valence band , thermal conduction , valence (chemistry) , chemistry , analytical chemistry (journal) , materials science , physics , thermodynamics , electrical resistivity and conductivity , electron , quantum mechanics , chromatography
Hall effect data evaluated with various assumptions regarding the energy band parameters are compared with the results of optical measurements. The energy gap E g , of an ideal crystal described by the Kane band model should be distinguished from the energy difference ET between conduction and valence band tail states which contribute also to the carrier transport. The temperature coefficient of E g (T) is proposed to be higher than that used in the well‐known Hansen‐Schmit‐Casselman relation, while E T , versus temperature varies more slowly as a consequence of a broadening of the band tails with increasing temperature.