Short range order in liquid pnictides

M. Mayo, E. Yahel, Y. Greenberg, G. Makov

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17 Scopus citations

Abstract

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.

Original languageEnglish
Article number505102
JournalJournal of Physics Condensed Matter
Volume25
Issue number50
DOIs
StatePublished - 18 Dec 2013

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