Multiferroicity in rare-earth nickelates RNiO3
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Contributors
Abstract
We show that charge ordered rare-earth nickelates of the type RNiO 3 (R=Ho, Lu, Pr and Nd) are multiferroic with very large magnetically-induced ferroelectric (FE) polarizations. This we determine from first principles electronic structure calculations. The emerging FE polarization is directly tied to the long-standing puzzle of which kind of magnetic ordering is present in this class of materials: its direction and size indicate the type of ground-state spin configuration that is realized. Vice versa, the small energy differences between the different magnetic orderings suggest that a chosen magnetic ordering can be stabilized by cooling the system in the presence of an electric field.
Details
Original language | English |
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Article number | 156401 |
Journal | Physical review letters |
Volume | 103 |
Issue number | 15 |
Publication status | Published - 7 Oct 2009 |
Peer-reviewed | Yes |
Externally published | Yes |