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- W4287330451 abstract "We present a general method of constructing textit{in-situ} pseodopotentials from first principles, all-electron, full-potential electronic structure calculations of a solid. The method is applied to bcc Na, at equilibrium volume. The essential steps of the method involve (i) calculating an all-electron Kohn-Sham eigenstate. (ii) Replacing the oscillating part of the wavefunction (inside the muffin-tin spheres) of this state, with a smooth function. (iii) Representing the smooth wavefunction in a Fourier series, and (iv) inverting the Kohn-Sham equation, to extract the pseudopotential that produces the state generated in steps (i)-(iii). It is shown that an textit{in-situ} pseudopotential can reproduce an all-electron, full-potential eigenvalue up to the sixth significant digit. A comparison of the all-electron theory, textit{in-situ} pseudopotential theory and the standard nonlocal pseudopotential theory demonstrates good agreement, e.g., in the energy dispersion of the 3$s$ band state of bcc Na." @default.
- W4287330451 created "2022-07-25" @default.
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- W4287330451 date "2021-02-09" @default.
- W4287330451 modified "2023-09-26" @default.
- W4287330451 title "textit{In-situ} pseudopotentials for electronic structure theory" @default.
- W4287330451 doi "https://doi.org/10.48550/arxiv.2102.04719" @default.
- W4287330451 hasPublicationYear "2021" @default.
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