Lattice dynamics of Cd‐rich Cd 1− x  Hg  x  Te alloys | Zendy

Hoclet M. | Zendy; Plumelle P. | Zendy; Vandevyver M. | Zendy; Triboulet R. | Zendy; Marfaing Y. | Zendy

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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.

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