High-throughput Wannierizations and screening of novel materials

ORAL

Abstract

Maximally localized Wannier functions (MLWFs) are widely used in computational condensed matter physics and materials science. We recently developed some very effective automated Wannierization algorithms: projectability-disentangled Wannier functions (PDWFs), to construct atom-centered Wannier functions that span both occupied and unoccupied states, and manifold-remixed Wannier functions (MRWFs), that mix these into target manifolds. These methods make it possible to reliably Wannierize both composite bands (e.g., the valence bands of insulators), or entangled bands (of metals, or the valence plus conduction bands of insulators), as exemplified here for over 20,000 crystal structures taken from the Materials Cloud three-dimensional crystals database (MC3D). We showcase this MLWF database and its accuracy and efficiency in calculating many physical properties with several applications geared toward the discovery of high-performance materials, including thermoelectrics, polar crystals, and nonlinear Hall materials.

* We acknowledge financial support from the NCCR MARVEL grant No. 205602, and the SNSF grant 200021E_206190 "FISH4DIET". The work is also supported by grants from the CSCS on the Swiss share of the LUMI system under project IDs "PILOT MC EPFL-NM 01" and "REGULAR MC EPFL-NM 02", and a grant from the CSCS under project ID s0178.

Publication: [1] J. Qiao, G. Pizzi and N. Marzari, Projectability disentanglement for accurate and automated electronic-structure Hamiltonians, arXiv 2303.07877 (2023), accepted in npj Computational Materials.
[2] J. Qiao, G. Pizzi and N. Marzari, Automated mixing of maximally localized Wannier functions into target manifolds, arXiv 2306.00678 (2023), accepted in npj Computational Materials.

Presenters

  • Junfeng Qiao

    Ecole Polytechnique Federale de Lausanne, École Polytechnique Fédérale de Lausanne (EPFL)

Authors

  • Junfeng Qiao

    Ecole Polytechnique Federale de Lausanne, École Polytechnique Fédérale de Lausanne (EPFL)

  • Giovanni Pizzi

    Paul Scherrer Institut (PSI), Paul Scherrer Institute

  • Nicola Marzari

    Ecole Polytechnique Federale de Lausanne, THEOS, EPFL; NCCR MARVEL; LSM Paul Scherrer Insitut, EPFL, THEOS, EPFL; NCCR, MARVEL; LMS, Paul Scherrer Institut