Abstract
Comments are presented on the recent theories of two-dimensional melting which envisage melting as proceeding via two second-order transitions comprising dislocation dipole dissociation followed by disclination dipole dissociation. It is suggested that if the configurational entropy is properly included, the model system may jump discontinuously from a volume below the dislocation transition to a volume above the disclination transition so that both transitions are virtual and are hidden in the first-order discontinuity. A reinterpretation of the recent molecular-dynamics simulation of two-dimensional melting of Frenkel and McTague, reveals that such is the case for a Lennard-Jones system. There may be no fundamental difference between two-and three-dimensional melting.
©1980 The American Physical Society
Original language | English |
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Journal | Physical Review B |
Volume | 22 |
Issue number | 1 |
Pages (from-to) | 453-455 |
ISSN | 2469-9950 |
DOIs | |
Publication status | Published - 1980 |