Heat capacity of liquids: An approach from the solid phase

Trachenko, K. (2008) Heat capacity of liquids: An approach from the solid phase. Physical Review B (Condensed Matter and Materials Physics), 78 (10). pp. 104201-7. DOI 10.1103/PhysRevB.78.104201

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Abstract

We calculate the energy and heat capacity of a liquid on the basis of its elastic properties and vibrational states. The experimental decrease of liquid heat capacity with temperature is attributed to the increasing loss of two transverse modes with frequency 1/, where is liquid relaxation time. In a simple model, liquid heat capacity is related to viscosity and is compared with the experimental data of mercury. We also calculate the vibrational energy of a quantum liquid, and show that transverse phonons cannot be excited in the lowtemperature limit. Finally, we discuss the implications of the proposed approach to liquids for the problem of glass transition.

Item Type: Article
Uncontrolled Keywords: 08AREP IA57 2008 P kot;
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
Journal or Publication Title: Physical Review B (Condensed Matter and Materials Physics)
Volume: 78
Page Range: pp. 104201-7
Identification Number: 10.1103/PhysRevB.78.104201
Depositing User: Sarah Humbert
Date Deposited: 16 Feb 2009 13:03
Last Modified: 23 Jul 2013 10:08
URI: http://eprints.esc.cam.ac.uk/id/eprint/744

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