Bloch's theorem in orbital-density-dependent functionals: band structures from Koopmans spectral functionals


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{
  "metadata": {
    "is_last": true, 
    "publication_date": "Nov 19, 2021, 14:36:00", 
    "edited_by": 576, 
    "version": 1, 
    "license": "Creative Commons Attribution 4.0 International", 
    "license_addendum": null, 
    "_files": [
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        "key": "MC_archive.tar", 
        "size": 1116160, 
        "description": "The archive contains the inputs and the reference to the versions of the codes used in order to reproduce all the results obtained in the paper."
      }
    ], 
    "mcid": "2021.193", 
    "keywords": [
      "DFT", 
      "photoemission spectra", 
      "orbital-density-dependent", 
      "Koopmans functionals", 
      "electronic bands", 
      "electronic structure", 
      "MARVEL/OSP"
    ], 
    "contributors": [
      {
        "givennames": "Riccardo", 
        "email": "riccardo.degennaro@epfl.ch", 
        "familyname": "De Gennaro", 
        "affiliations": [
          "Theory and Simulations of Materials (THEOS), and National Centre for Computational Design and Discovery of Novel Materials (MARVEL), \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne, CH-1015 Lausanne, Switzerland"
        ]
      }, 
      {
        "givennames": "Nicola", 
        "email": "nicola.colonna@psi.ch", 
        "familyname": "Colonna", 
        "affiliations": [
          "Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland", 
          "Theory and Simulations of Materials (THEOS), and National Centre for Computational Design and Discovery of Novel Materials (MARVEL), \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne, CH-1015 Lausanne, Switzerland"
        ]
      }, 
      {
        "givennames": "Edward", 
        "email": "edward.linscott@epfl.ch", 
        "familyname": "Linscott", 
        "affiliations": [
          "Theory and Simulations of Materials (THEOS), and National Centre for Computational Design and Discovery of Novel Materials (MARVEL), \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne, CH-1015 Lausanne, Switzerland"
        ]
      }, 
      {
        "givennames": "Nicola", 
        "email": "nicola.marzari@epfl.ch", 
        "familyname": "Marzari", 
        "affiliations": [
          "Theory and Simulations of Materials (THEOS), and National Centre for Computational Design and Discovery of Novel Materials (MARVEL), \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne, CH-1015 Lausanne, Switzerland"
        ]
      }
    ], 
    "status": "published", 
    "doi": "10.24435/materialscloud:ee-vg", 
    "title": "Bloch's theorem in orbital-density-dependent functionals: band structures from Koopmans spectral functionals", 
    "id": "1017", 
    "description": "Koopmans-compliant functionals provide a novel orbital-density-dependent framework for an accurate evaluation of spectral properties; they are obtained by imposing a generalized piecewise-linearity condition on the total energy of the system with respect to the occupation of any orbital. In crystalline materials, due to the orbital-density-dependent nature of the functionals, minimization of the total energy to a ground state provides a set of minimizing variational orbitals that are localized, and thus break the periodicity of the underlying lattice. Despite this, we show that Bloch symmetry can be preserved and it is possible to describe the electronic states with a band-structure picture, thanks to the Wannier-like character of the variational orbitals. We also present a method to unfold and interpolate the electronic bands from supercell (Gamma-point) calculations, which enables us to calculate full band structures with Koopmans-compliant functionals. The results obtained for a set of benchmark semiconductors and insulators show a very good agreement with state-of-the-art many-body perturbation theory and experiments, underscoring the reliability of these spectral functionals in predicting band structures.", 
    "owner": 197, 
    "_oai": {
      "id": "oai:materialscloud.org:1017"
    }, 
    "conceptrecid": "1016", 
    "references": [
      {
        "citation": "submitted", 
        "type": "Journal reference"
      }, 
      {
        "url": "https://arxiv.org/abs/2111.09550", 
        "comment": "", 
        "citation": "R. De Gennaro, N. Colonna, E. Linscott, N. Marzari, arXiv:2111.09550 (2021)", 
        "type": "Preprint"
      }
    ]
  }, 
  "updated": "2021-11-19T13:36:00.252937+00:00", 
  "revision": 8, 
  "id": "1017", 
  "created": "2021-09-15T15:46:01.761284+00:00"
}