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|Type:||Artigo de periódico|
|Title:||Zero-Point Vacancy Concentration in a Model Quantum Solid: A Reversible-Work Approach|
de Koning, M
|Abstract:||We investigate the influence of anharmonic effects on the zero-point vacancy concentration in a boson system model in the solid phase at T=0 K. We apply the reversible-work method to compute the vacancy formation free energy and the vacancy concentration in the system. A comparison of our results with those obtained using the harmonic approximation show that anharmonic effects reduce the formation free energy by similar to 25%, leading to an increase of the zero-point vacancy concentration by more than an order of magnitude.|
Reversible work method
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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