We derive a simple expression for the vacancy formation energy in a quantal crystal near to melting in terms of its Lindemann parameter and of the density response of the liquid near to freezing. Numerical illustrations are given for vacancies in He-4 and He-3 crystals.
Vacancy formation energy in the quantal crystals of the two helium isotopes
Tozzini V;
1997
Abstract
We derive a simple expression for the vacancy formation energy in a quantal crystal near to melting in terms of its Lindemann parameter and of the density response of the liquid near to freezing. Numerical illustrations are given for vacancies in He-4 and He-3 crystals.File in questo prodotto:
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