Premium
Lattice dynamics of Cd‐rich Cd 1− x Hg x Te alloys
Author(s) -
Hoclet M.,
Plumelle P.,
Vandevyver M.,
Triboulet R.,
Marfaing Y.
Publication year - 1979
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.2220920225
Subject(s) - impurity , cadmium telluride photovoltaics , lattice (music) , nearest neighbour , chemistry , atomic physics , tellurium , crystallography , condensed matter physics , physics , materials science , nanotechnology , inorganic chemistry , organic chemistry , artificial intelligence , computer science , acoustics
An investigation is made of the lattice dynamics of low concentration of Hg atoms ( x < 0.3) in Cd‐rich Cd 1− x Hg x Te mixed system. The vibrational mode frequency for the isolated Hg replacing Cd atoms in CdTe is observed at 131 cm −1 . The impurity is described by a perturbation model that accounts for the change of mass at the impurity site as well as the local variation of nearest‐neighbour forces. A calculation based on the Green's function theory suggests stiffening in nearest‐neighbour forces (Δ f/f = +0.25) due to isolated Hg in CdTe system.