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Low-temperature ferroelectric phase and magnetoelectric coupling in underdoped La2CuO4+x

Viskadourakis, Z.; Radulov, I.; Petrovic, A. P.; Mukherjee, S.; Andersen, B. M.; Jelbert, G.; Headings, N. S.; Hayden, S. M.; Kiefer, K. and Landsgesell, S., et al. (2012) In Physical Review B (Condensed Matter and Materials Physics) 85(21).
Abstract
We report the discovery of ferroelectricity below 4.5 K in highly underdoped La2CuO4+x accompanied by slow charge dynamics which develop below T similar to 40 K. An anisotropic magnetoelectric response has also been observed, indicating considerable spin-charge coupling in this lightly doped parent high-temperature copper-oxide superconductor. The ferroelectric state is proposed to develop from polar nanoregions, in which spatial inversion symmetry is locally broken due to nonstoichiometric carrier doping.
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publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
85
issue
21
publisher
American Physical Society
external identifiers
  • wos:000304692700004
  • scopus:84862197043
ISSN
1098-0121
DOI
10.1103/PhysRevB.85.214502
language
English
LU publication?
yes
id
eb9c44a5-4bed-460e-895e-4cb97598f15a (old id 2896995)
date added to LUP
2012-07-24 10:35:26
date last changed
2017-02-26 03:49:14
@article{eb9c44a5-4bed-460e-895e-4cb97598f15a,
  abstract     = {We report the discovery of ferroelectricity below 4.5 K in highly underdoped La2CuO4+x accompanied by slow charge dynamics which develop below T similar to 40 K. An anisotropic magnetoelectric response has also been observed, indicating considerable spin-charge coupling in this lightly doped parent high-temperature copper-oxide superconductor. The ferroelectric state is proposed to develop from polar nanoregions, in which spatial inversion symmetry is locally broken due to nonstoichiometric carrier doping.},
  author       = {Viskadourakis, Z. and Radulov, I. and Petrovic, A. P. and Mukherjee, S. and Andersen, B. M. and Jelbert, G. and Headings, N. S. and Hayden, S. M. and Kiefer, K. and Landsgesell, S. and Argyriou, Dimitri and Panagopoulos, C.},
  issn         = {1098-0121},
  language     = {eng},
  number       = {21},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Low-temperature ferroelectric phase and magnetoelectric coupling in underdoped La2CuO4+x},
  url          = {http://dx.doi.org/10.1103/PhysRevB.85.214502},
  volume       = {85},
  year         = {2012},
}