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Dielectric response from lattices of dipoles with fixed orientation.

Thuresson, Axel LU and Karlström, Gunnar LU (2014) In Journal of Chemical Physics 141(23).
Abstract
The properties of dipolar cubic lattices are studied and the paradox of how to obtain a long range polarization in such lattices is resolved by choosing a proper shape of the total system. It has been shown that large but finite number of aligned dipoles prefer to exist as needle shaped macroscopic particles [M. Yoon and D. Tománek, J. Phys.: Condens. Matter 22, 455105 (2010)]. The total energy for a particle in such a system has one short range contribution depending on the packing (the chosen lattice) and one long range term depending on the dipole density of the system. We show that the latter term corresponds exactly to the polarization term from a dielectric medium embedding a sphere of the considered system. There is no need to... (More)
The properties of dipolar cubic lattices are studied and the paradox of how to obtain a long range polarization in such lattices is resolved by choosing a proper shape of the total system. It has been shown that large but finite number of aligned dipoles prefer to exist as needle shaped macroscopic particles [M. Yoon and D. Tománek, J. Phys.: Condens. Matter 22, 455105 (2010)]. The total energy for a particle in such a system has one short range contribution depending on the packing (the chosen lattice) and one long range term depending on the dipole density of the system. We show that the latter term corresponds exactly to the polarization term from a dielectric medium embedding a sphere of the considered system. There is no need to include a dielectric medium in this modeling and the "dielectric stabilization" is generated solely by the dipoles of the system. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Chemical Physics
volume
141
issue
23
publisher
American Institute of Physics
external identifiers
  • pmid:25527946
  • wos:000346662700035
ISSN
0021-9606
DOI
10.1063/1.4903926
language
English
LU publication?
yes
id
61ea3973-12c1-445e-bb17-7ba5f6afde4b (old id 4905867)
date added to LUP
2015-01-13 17:07:10
date last changed
2016-09-20 05:39:04
@article{61ea3973-12c1-445e-bb17-7ba5f6afde4b,
  abstract     = {The properties of dipolar cubic lattices are studied and the paradox of how to obtain a long range polarization in such lattices is resolved by choosing a proper shape of the total system. It has been shown that large but finite number of aligned dipoles prefer to exist as needle shaped macroscopic particles [M. Yoon and D. Tománek, J. Phys.: Condens. Matter 22, 455105 (2010)]. The total energy for a particle in such a system has one short range contribution depending on the packing (the chosen lattice) and one long range term depending on the dipole density of the system. We show that the latter term corresponds exactly to the polarization term from a dielectric medium embedding a sphere of the considered system. There is no need to include a dielectric medium in this modeling and the "dielectric stabilization" is generated solely by the dipoles of the system.},
  articleno    = {234505},
  author       = {Thuresson, Axel and Karlström, Gunnar},
  issn         = {0021-9606},
  language     = {eng},
  number       = {23},
  publisher    = {American Institute of Physics},
  series       = {Journal of Chemical Physics},
  title        = {Dielectric response from lattices of dipoles with fixed orientation.},
  url          = {http://dx.doi.org/10.1063/1.4903926},
  volume       = {141},
  year         = {2014},
}