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A post-Hartree-Fock study of pressure-induced phase transitions in solid nitrogen: the case of the α, γ, and ε low-pressure phases



A post-Hartree-Fock study of pressure-induced phase transitions in solid nitrogen: the case of the α, γ, and ε low-pressure phases



Journal of Chemical Physics 134(7): 074502



We have performed fully periodic ab initio post-Hartree-Fock calculations on three low-temperature molecular phases of solid nitrogen, namely α, γ, and ε. The aim is to characterize the pressure-induced transitions among these phases, which are prototypical molecular crystals, through a periodic local-MP2 method, implemented in the CRYSCOR program. Cohesive energies are computed using extended correlation consistent molecular basis sets, up to quintuple-ζ quality. The MP2 description of equilibrium volumes, pressure-volume curves, and transition pressures is found to be in good agreement with the experiments.

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Accession: 051215107

Download citation: RISBibTeXText

PMID: 21341854

DOI: 10.1063/1.3553206


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