---
_id: '13525'
abstract:
- lang: eng
text: The frequency-dependent dielectric function and the second-order polarizability
tensor of ferroelectric LiNbO3 are calculated from first principles. The calculations
are based on the electronic structure obtained from density-functional theory.
The subsequent application of the GW approximation to account for quasiparticle
effects and the solution of the Bethe-Salpeter equation for the stoichiometric
material yield a dielectric function that slightly overestimates the absorption
onset and the oscillator strength in comparison with experimental measurements.
Calculations at the level of the independent-particle approximation indicate that
these deficiencies are, at least, partially related to the neglect of intrinsic
defects typical for the congruent material. The second-order polarizability calculated
within the independent-particle approximation predicts strong nonlinear coefficients
for photon energies above 1.5 eV. The comparison with measured data suggests that
the inclusion of self-energy effects in the nonlinear optical response leads to
a better agreement with experiments. The intrinsic defects of congruent samples
reduce the optical nonlinearities, in particular, for the 21 and 31 tensor components,
further improving the agreement between experiments and theory.
article_number: '195208'
article_type: original
author:
- first_name: Arthur
full_name: Riefer, Arthur
last_name: Riefer
- first_name: Simone
full_name: Sanna, Simone
last_name: Sanna
- first_name: Arno
full_name: Schindlmayr, Arno
id: '458'
last_name: Schindlmayr
orcid: 0000-0002-4855-071X
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
citation:
ama: Riefer A, Sanna S, Schindlmayr A, Schmidt WG. Optical response of stoichiometric
and congruent lithium niobate from first-principles calculations. Physical
Review B. 2013;87(19). doi:10.1103/PhysRevB.87.195208
apa: Riefer, A., Sanna, S., Schindlmayr, A., & Schmidt, W. G. (2013). Optical
response of stoichiometric and congruent lithium niobate from first-principles
calculations. Physical Review B, 87(19). https://doi.org/10.1103/PhysRevB.87.195208
bibtex: '@article{Riefer_Sanna_Schindlmayr_Schmidt_2013, title={Optical response
of stoichiometric and congruent lithium niobate from first-principles calculations},
volume={87}, DOI={10.1103/PhysRevB.87.195208},
number={19195208}, journal={Physical Review B}, publisher={American Physical Society},
author={Riefer, Arthur and Sanna, Simone and Schindlmayr, Arno and Schmidt, Wolf
Gero}, year={2013} }'
chicago: Riefer, Arthur, Simone Sanna, Arno Schindlmayr, and Wolf Gero Schmidt.
“Optical Response of Stoichiometric and Congruent Lithium Niobate from First-Principles
Calculations.” Physical Review B 87, no. 19 (2013). https://doi.org/10.1103/PhysRevB.87.195208.
ieee: A. Riefer, S. Sanna, A. Schindlmayr, and W. G. Schmidt, “Optical response
of stoichiometric and congruent lithium niobate from first-principles calculations,”
Physical Review B, vol. 87, no. 19, 2013.
mla: Riefer, Arthur, et al. “Optical Response of Stoichiometric and Congruent Lithium
Niobate from First-Principles Calculations.” Physical Review B, vol. 87,
no. 19, 195208, American Physical Society, 2013, doi:10.1103/PhysRevB.87.195208.
short: A. Riefer, S. Sanna, A. Schindlmayr, W.G. Schmidt, Physical Review B 87 (2013).
date_created: 2019-09-30T14:11:18Z
date_updated: 2022-01-06T06:51:38Z
ddc:
- '530'
department:
- _id: '295'
- _id: '296'
doi: 10.1103/PhysRevB.87.195208
external_id:
isi:
- '000319391000002'
file:
- access_level: open_access
content_type: application/pdf
creator: schindlm
date_created: 2020-08-27T22:06:46Z
date_updated: 2020-08-30T14:53:40Z
description: © 2013 American Physical Society
file_id: '18478'
file_name: PhysRevB.87.195208.pdf
file_size: 791961
relation: main_file
title: Optical response of stoichiometric and congruent lithium niobate from first-principles
calculations
file_date_updated: 2020-08-30T14:53:40Z
has_accepted_license: '1'
intvolume: ' 87'
isi: '1'
issue: '19'
language:
- iso: eng
oa: '1'
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Physical Review B
publication_identifier:
eissn:
- 1550-235X
issn:
- 1098-0121
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Optical response of stoichiometric and congruent lithium niobate from first-principles
calculations
type: journal_article
user_id: '458'
volume: 87
year: '2013'
...