Order Parameters and Phase Diagram of Multiferroic RMn2O5

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Physical Sciences and Mathematics
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Aharony, Amnon
Entin-Wohlman, Ora
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The generic magnetic phase diagram of multiferroic RMn2O5 (with R = Y, Ho, Tb, Er, Tm), which allows different sequences of ordered magnetic structures for different R’s and different control parameters, is described using order parameters which explicitly incorporate the magnetic symmetry. A phenomenological magnetoelectric coupling is used to explain why some of these magnetic phases are also ferroelectric. Several new experiments, which can test this theory, are proposed.

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2008-05-30
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Suggested Citation: A.B. Harris, A. Aharony adn O.Entin-Wohlman. (2008). "Order Parameters and Phase Diagram of Multiferroic RMn2O5." Physical Review Letters. 100, 217202. © 2008 The American Physical Society http://dx.doi.org/10.1103/PhysRevLett.100.217202
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