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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.
Original language | English |
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Article number | 214502 |
Pages (from-to) | - |
Number of pages | 8 |
Journal | Physical Review B: Condensed Matter and Materials Physics |
Volume | 85 |
Issue number | 21 |
DOIs | |
Publication status | Published - 1 Jun 2012 |
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Dive into the research topics of 'Low-temperature ferroelectric phase and magnetoelectric coupling in underdoped La2CuO4+x'. Together they form a unique fingerprint.Projects
- 1 Finished
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PARTNERSHIP FUNDING: NOVEL QUANTUM ORDER IN INTERACTING ELECTRON METALS
Hayden, S. M. (Principal Investigator)
1/10/04 → 1/10/09
Project: Research