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Title: Low-temperature ferroelectric phase and magnetoelectric coupling in underdoped La2CuO4+x
Authors: Viskadourakis, Z.
Radulov, I.
Petrovic, A. P.
Mukherjee, S.
Andersen, B. M.
Jelbert, G.
Headings, N. S.
Hayden, S. M.
Kiefer, K.
Landsgesell, S.
Argyriou, D. N.
Panagopoulos, Christos
Keywords: DRNTU::Science::Physics::Electricity and magnetism
Issue Date: 2012
Source: Viskadourakis, Z., Radulov, I., Petrovic, A. P., Mukherjee, S., Andersen, B. M., Jelbert, G., et al. (2012). Low-temperature ferroelectric phase and magnetoelectric coupling in underdoped La2CuO4+x. Physical Review B, 85(21), 214502-.
Series/Report no.: Physical review B
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 ∼ 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.
DOI: 10.1103/PhysRevB.85.214502
Rights: © 2012 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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