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An ab initio study of ground state, electronic and thermodynamical properties of GaP and Ga2P

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Abstract

In the present paper, we report an ab initio calculation of the ground state, electronic and thermodynamical properties like constant volume lattice specific heat, vibrational energy, internal energy, and entropy for GaP and Ga2P is presented. These properties are obtained after calculating the phonon spectrum over the entire Brillouin zone. The calculations were performed using the ABINIT program package, which is based on density functional theory (DFT) method and the use of pseudopotentials and plane wave expansion. Difference in the ground state properties such as electronic structure and thermodynamical properties are discussed. The thermodynamical properties follow the expected trend. There is a good agreement between present theoretical and limited available experimental data in the case of ground state such as lattice constant and bulk modulus and electronic properties. With the increase of Ga atoms in the unit cell the semiconducting nature of Ga2P turns to metallic. There is a noticeable difference in the thermodynamical properties in the case of both gallium compounds.

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Acknowledgements

Computations were carried out on the computer cluster PAWAN at the Department of Physics, Bhavnagar University financed by the Department of Science and Technology, Govt. of India and the University Grant Commission, New Delhi.

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  1. Department of Physics, Bhavnagar University, Bhavnagar, 364022, India

    Himadri R. Soni, Venu Mankad, Sanjay D. Gupta, Sanjeev K. Gupta & Prafulla K. Jha

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  1. Himadri R. Soni
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  2. Venu Mankad
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  3. Sanjay D. Gupta
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  5. Prafulla K. Jha
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Correspondence to Prafulla K. Jha.

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Soni, H.R., Mankad, V., Gupta, S.D. et al. An ab initio study of ground state, electronic and thermodynamical properties of GaP and Ga2P. J Therm Anal Calorim 107, 39–44 (2012). https://doi.org/10.1007/s10973-011-1466-0

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