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- W4287279911 abstract "We describe a robust method for determining Pipek-Mezey (PM) Wannier functions (WF), recently introduced by J'onsson et al. (J. Chem. Theor. Chem. 2017, 13, 460), which provide some formal advantages over the more common Boys (also known as maximally-localized) Wannier functions. The Broyden-Fletcher-Goldfarb-Shanno (BFGS) based PMWF solver is demonstrated to yield dramatically faster convergence compared to the alternatives (steepest ascent and conjugate gradient) in a variety of 1-, 2-, and 3-dimensional solids (including some with vanishing gaps), and can be used to obtain Wannier functions robustly in supercells with thousands of atoms. Evaluation of the PM functional and its gradient in periodic LCAO representation used a particularly simple definition of atomic charges obtained by Moore-Penrose pseudoinverse projection onto the minimal atomic orbital basis. An automated Canonicalize Phase then Randomize (CPR) method for generating the initial guess for WFs contributes significantly to the robustness of the solver." @default.
- W4287279911 created "2022-07-25" @default.
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- W4287279911 date "2021-03-08" @default.
- W4287279911 modified "2023-10-16" @default.
- W4287279911 title "Robust Pipek-Mezey Orbital Localization in Periodic Solids" @default.
- W4287279911 doi "https://doi.org/10.48550/arxiv.2103.04562" @default.
- W4287279911 hasPublicationYear "2021" @default.
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