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Optimized norm-conserving Vanderbilt pseudopotentials

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arxiv 1306.4707 v1 pith:OE6ZTJGN submitted 2013-06-19 cond-mat.mtrl-sci

classification cond-mat.mtrl-sci
keywords norm-conservingoptimizationpseudopotentialpseudopotentialstwo-projectorabilityall-electronapply
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Fully-nonlocal two-projector norm-conserving pseudopotentials are shown to be compatible with a systematic approach to the optimization of convergence with the size of the plane-wave basis. A new formulation of the optimization is developed, including the ability to apply it to positive-energy atomic scattering states, and to enforce greater continuity in the pseudopotential. The generalization of norm-conservation to multiple projectors is reviewed and recast for the present purposes. Comparisons among the results of all-electron and one- and two-projector norm-conserving pseudopotential calculations of lattice constants and bulk moduli are made for a group of solids chosen to represent a variety of types of bonding and a sampling of the periodic table.

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Cited by 2 Pith papers

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    A first-principles downfolding framework that includes short- and long-range electron-phonon coupling predicts large phonon screening of electron interactions, including an attractive nearest-neighbor interaction in GeTe.

  2. Ab initio theory of the non-resonant Raman effect in crystals at finite temperature in comparison to experiment: The examples of GaN and BaZrS3

    cond-mat.mtrl-sci 2024-12 conditional novelty 6.0 of 10

    A finite-wavevector, polarization-resolved first-principles Raman theory combined with temperature-dependent phonons reproduces measured Raman spectra of GaN and BaZrS3.

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