Pseudopotential hyperfine calculations through perturbative core-level polarization

Mohammad Saeed Bahramy, Marcel H.F. Sluiter, Yoshiyuki Kawazoe

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


Within density functional theory, an efficient and accurate method for calculating the hyperfine parameters in the context of pseudopotential formalism is proposed. The spin density at and in the vicinity of the nucleus is evaluated in two steps. First, a transformation due to Blöchl [Phys. Rev. B 50, 17953 (1994)] is applied to reconstruct the frozen-core all-electron wave functions in the core regions. Second, the contributions of core orbitals to the charge density at the nucleus are evaluated through first-order perturbation theory in which the perturbing potential is defined as a functional of charge and spin densities. The current pseudopotential based method makes it possible to predict hyperfine parameters of complex molecular assemblies and crystal defects with an accuracy as good as current all-electron method with less computational cost.

Original languageEnglish
Article number035124
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number3
Publication statusPublished - 2007 Jul 30


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