Short range order in liquid pnictides

Liquid pnictides have anomalous physical properties and complex radial distribution functions. The quasi-crystalline model of liquid structure is applied to interpret the three-dimensional structure of liquid pnictides. It is shown that all the column V elements can be characterized by a short range...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2013-12, Vol.25 (50), p.505102-505102
Main Authors: Mayo, M, Yahel, E, Greenberg, Y, Makov, G
Format: Article
Language:English
Subjects:
Alloys - chemistry
Columnar structure
Condensed matter
Condensed matter: structure, mechanical and thermal properties
Distortion
Evolution
Exact sciences and technology
Inorganic Chemicals - chemistry
Liquids
Mathematical models
Models, Chemical
Physics
Quantum Theory
Quartz - chemistry
Short range order
Structure of liquids
Structure of solids and liquids
crystallography
Theory and models of liquid structure
Three dimensional
Water - chemistry
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Summary:Liquid pnictides have anomalous physical properties and complex radial distribution functions. The quasi-crystalline model of liquid structure is applied to interpret the three-dimensional structure of liquid pnictides. It is shown that all the column V elements can be characterized by a short range order lattice symmetry similar to that of the underlying solid, the A7 structure, which originates from a Peierls distorted simple cubic lattice. The evolution of the liquid structure down the column as well as its temperature and pressure dependence is interpreted by means of the effect of thermodynamic parameters on the Peierls distortion. Surprisingly, it is found that the Peierls effect increases with temperature and the nearest neighbour distances exhibit negative thermal expansion.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/25/50/505102