2023•Physical review. B./Physical review. BRequires access

Range-separated hybrid functional pseudopotentials

Yang Yang, Georgia Prokopiou, Tian Qiu, Aaron M. Schankler, Andrew M. Rappe, Leeor Kronik, Robert A. DiStasio

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Abstract

This work presents a general scheme for constructing pseudopotentials for advanced density functional theory (DFT) calculations employing range-separated hybrid (RSH) functionals. The authors demonstrate pseudopotential construction for several atoms and RSH functionals, and find that pseudopotential consistency errors tend to be systematic when computing solid-state properties and can exceed 0.1 eV for band gaps. This work removes the need to incur such unnecessary errors when performing state-of-the-art electronic structure calculations at the computationally demanding RSH-DFT level.

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What this paper is about

This work presents a general scheme for constructing pseudopotentials for advanced density functional theory (DFT) calculations employing range-separated hybrid (RSH) functionals. The authors demonstrate pseudopotential construction for several atoms and RSH functionals, and find that pseudopotential consistency errors tend to be systematic when computing solid-state properties and can exceed 0.1 eV for band gaps. This work removes the need to incur such unnecessary errors when performing state-of-the-art electronic structure calculations at the computationally demanding RSH-DFT level.

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Available abstract

This work presents a general scheme for constructing pseudopotentials for advanced density functional theory (DFT) calculations employing range-separated hybrid (RSH) functionals. The authors demonstrate pseudopotential construction for several atoms and RSH functionals, and find that pseudopotential consistency errors tend to be systematic when computing solid-state properties and can exceed 0.1 eV for band gaps. This work removes the need to incur such unnecessary errors when performing state-of-the-art electronic structure calculations at the computationally demanding RSH-DFT level.

Key concepts: Pseudopotential, Density functional theory, Range (aeronautics), Hybrid functional, Work (physics), Consistency (knowledge bases), Electronic structure, Physics

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