Maximally localized Wannier functions from PAW or ultrasoft pseudopotentials

Details Maximally localized Wannier functions from PAW or ultrasoft pseudopotentials Maximally localized Wannier functions from PAW or ultrasoft pseudopotentials

2006-03-09

arxiv.org/abs/cond-mat/0603256v1

Physics

Condensed Matter

Soft Condensed Matter

10 pages, 3 figures

Scientific paper

We report a theoretical scheme that enables the calculation of maximally localized Wannier functions in the formalism of projector-augmented-waves (PAW) which also includes the ultrasoft-pseudopotential (USPP) approach. We give a description of the basic underlying formalism and explicitly write all the required matrix elements from the common ingredients of the PAW/USPP theory. We report an implementation of the method in a form suitable to accept the input electronic structure from USPP plane-wave DFT simulations. We apply the method to the calculation of Wannier functions, dipole moments and spontaneous polarizations in a range of test cases. Comparison with norm-conserving pseudopotentials is reported as a benchmark.

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