Melting and critical superheating
2006 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 73, no 1Article in journal (Refereed) Published
Two mechanisms of melting are known, heterogeneous, where melting starts at surfaces, and homogeneous, where the liquid nucleates in the bulk crystal. If melting occurs homogeneously, a crystal can be superheated significantly above its melting temperature (T-m). At present, the physical meaning of the limit of superheating (T-LS) is unknown. We demonstrate, by molecular dynamics simulations, that the total energy of a solid at T-LS is equal to the total energy of its liquid at T-m at the same volume. In the high pressure limit T-LS and T-m are connected by the constant k(AB)=ln 2/3 via the relation k(AB)=T-LS/T-m-1.
Place, publisher, year, edition, pages
2006. Vol. 73, no 1
stability limit, thermodynamics, catastrophe, transition, lindemann, crystals, surface, state, phase, quasi
IdentifiersURN: urn:nbn:se:kth:diva-15401DOI: 10.1103/PhysRevB.73.012201ISI: 000235009000004ScopusID: 2-s2.0-33144475747OAI: oai:DiVA.org:kth-15401DiVA: diva2:333442
QC 201005252010-08-052010-08-05Bibliographically approved