MELTING of COPPER with E. Polturak and A. Kanigel
- CRYSTAL MELTS WHEN:
Understanding experimental data
of Polturak et al on role of point defects in the
melting of solid helium.
Copper was selected
the complications of modeling
a quantum solid.
the sample might begin near the surface where
the formation energies of defects are lower.
- EMIL's CONJECTURE: Instability leading to
melting occured once the molar volume reached a critical
value (equal to the molar volume of the liquid phase)
independent of the path(defects or vacancies) to the increase.
For copper samples with periodic boundary conditions,
Amit Kanigel, Emil Polturak and JA
this was true and
rather than vacancies were the important defects.
They showed that Born's melting criterion is valid for the
mechanical melting that occurs when melting from a surface
or a grain boundary is artificially supressed.