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Title: Local representation of the electronic dielectric response function

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)

We present a local representation of the electronic dielectric response function, based on a spatial partition of the dielectric response into contributions from each occupied Wannier orbital using a generalized density functional perturbation theory. This procedure is fully ab initio, and therefore allows us to rigorously define local metrics, such as “bond polarizability,” on Wannier centers. We show that the locality of the bare response function is determined by the locality of three quantities: Wannier functions of the occupied manifold, the density matrix, and the Hamiltonian matrix. Furthermore, in systems with a gap, the bare dielectric response is exponentially localized, which supports the physical picture of the dielectric response function as a collection of interacting local responses that can be captured by a tight-binding model.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704; SC0012704; AC02-05CH11231
OSTI ID:
1235871
Alternate ID(s):
OSTI ID: 1228805
Report Number(s):
BNL-111669-2015-JA; PRBMDO; R&D Project: 16068; KC0403020
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 92, Issue 24; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

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Cited By (4)

Communication: Dielectric properties of condensed systems composed of fragments journal August 2018
Molecular polarizability of water from local dielectric response theory journal August 2017
Visualizing electronic excitations with the particle-hole map: orbital localization and metric space analysis journal July 2018
Molecular Polarizability of Water from the Local Dielectric Response Theory text January 2017

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