Icosahedral Bond Orientational Order in Supercooled Liquids
1981; American Physical Society; Volume: 47; Issue: 18 Linguagem: Inglês
10.1103/physrevlett.47.1297
ISSN1092-0145
AutoresPaul J. Steinhardt, David R. Nelson, Marco Ronchetti,
Tópico(s)Phase Equilibria and Thermodynamics
ResumoThree-dimensional bond orientational order is studied via computer simulations of 864 particles interacting through a Lennard-Jones pair potential. Long-range orientational fluctuations appear upon supercooling about ten percent below the equilibrium melting temperature. The fluctuations suggest a broken icosahedral symmetry with extended correlations in the orientations of local icosahedral packing units.
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