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TVT, 2017, Volume 55, Issue 2, Pages 320–323 (Mi tvt10731)  

Short Communications

Investigation of the influence of lattice anharmonicity on the specific heats of diamond, silicon, and germanium

S. Sh. Rekhviashvili, Kh. L. Kunizhev

Institute of Applied Mathematics and Automation, Nalchik

Abstract: The isochoric specific heats of diamond, silicon, and germanium have been calculated ab initio using the quantum-statistical method. The phonon energy has been calculated by the Morse potential. The anharmonicity of lattice atomic vibrations is shown to occur at temperatures below the Debye temperature. Experimental data on the temperature dependences of the specific heats of diamond, silicon, and germanium can be interpreted more correctly by taking into account the lattice anharmonicity.

DOI: https://doi.org/10.7868/S0040364417020144

Full text: PDF file (198 kB)
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English version:
High Temperature, 2017, 55:2, 312–314

Bibliographic databases:

UDC: 536.631
Received: 10.07.2016
Accepted:08.11.2016

Citation: S. Sh. Rekhviashvili, Kh. L. Kunizhev, “Investigation of the influence of lattice anharmonicity on the specific heats of diamond, silicon, and germanium”, TVT, 55:2 (2017), 320–323; High Temperature, 55:2 (2017), 312–314

Citation in format AMSBIB
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