Adiabatic bond charge model for lattice dynamics of ternary chalcopyrite semiconductors by T. Gürel and R. Eryigit

Crystal Research and Technology

Cryst. Res. Technol. 41, 83 (2006) - Abstract -

Adiabatic bond charge model for lattice dynamics of ternary chalcopyrite semiconductors

T. Gürel and R. Eryigit

Department of Physics, Abant Izzet Baysal University, Bolu, 14280, Turkey

Keywords	phenomenological lattice dynamics models, adiabatic bond charge model, chalcopyrite semiconductors, lattice dynamics, phonon frequencies
PACS	63.20.Dj
DOI	10.1002/crat.200410536

The adiabatic bond charge model of Rustagi and Weber is extended to study lattice dynamical properties of ternary chalcopyrite semiconductors AgGaS₂, AgGaSe₂, CuInS₂, CuInSe₂, CuGaS₂, CuGaSe₂, CuAlS₂ and CuAlSe₂. The new model calculations agree well with the results of Raman/IR and neutron measurements of Brillouin zone center phonon frequencies for both low and high frequency modes which was difficult for other phenomenological lattice dynamical models.

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