Junfeng Qiao^1*, Giovanni Pizzi^1,2, Nicola Marzari^1,2

1 Theory and Simulations of Materials (THEOS), and National Centre for Computational Design and Discovery of Novel Materials (MARVEL), École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland

2 Laboratory for Materials Simulations (LMS), Paul Scherrer Institut (PSI), CH-5232 Villigen PSI, Switzerland

* Corresponding authors emails: junfeng.qiao@epfl.ch

DOI10.24435/materialscloud:2f-hs [version v1]

Publication date: Jun 01, 2023

How to cite this record

Junfeng Qiao, Giovanni Pizzi, Nicola Marzari, Automated mixing of maximally localized Wannier functions into target manifolds, Materials Cloud Archive 2023.86 (2023), doi: 10.24435/materialscloud:2f-hs.

Description

Maximally localized Wannier functions (MLWFs) are widely used to construct first-principles tight-binding models that accurately reproduce the electronic structure of materials. Recently, robust and automated approaches to generate these MLWFs have emerged, leading to natural sets of atomic-like orbitals that describe both the occupied states and the lowest lying unoccupied ones (when the latter can be meaningfully described by bonding/anti-bonding combinations of localized orbitals). For many applications, it is important to instead have MLWFs that describe only certain target manifolds separated in energy between them — the occupied states, the empty states, or certain groups of bands. Here, we start from the full set of MLWFs describing simultaneously all the target manifolds, and then mix them using a combination of parallel transport and maximal localization to construct orthogonal sets of MLWFs that fully and only span the desired target submanifolds. The algorithm is simple and robust, and it is applied to some paradigmatic but non-trivial cases (the valence and conduction bands of silicon, the top valence band of MoS₂, the 3d and t_2g/e_g bands of SrVO₃ and to a mid-throughput study of 77 insulators.

Materials Cloud sections using this data

Files

File name	Size	Description
README.md MD5md5:0082efa3a839ff4f2c2d74a06a3e7d99	2.8 KiB	Explanations of all the files
list_of_calculations_for_77_structures.txt MD5md5:3f3b706f55908bfc11a2a0c84503bb48	24.3 KiB	Table of AiiDA calculation UUID
MRWF_export_20230526.aiida MD5md5:385f3c75abef75e0dc78697af0f6ba9a Open this AiiDA archive on renkulab.io (https://renkulab.io/)	944.1 MiB	AiiDA database containing all the calculations

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External references

Keywords

Wannier functions Wannierization Wannier interpolation Manifold optimization MARVEL SNSF