Interaction of frustrated magnetic sublattices in ErMnO3

A spontaneous or field induced "hidden" phase transition with antiferromagnetic-to-ferromagnetic reordering is disclosed in multiply frustrated hexagonal ErMnO3. It is revealed by Faraday rotation and second harmonic generation as sublattice-sensitive probes to the Er and Mn systems. The a...

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Bibliographic Details
Published in:Physical review letters 2002-01, Vol.88 (2), p.027203-027203
Main Authors: Fiebig, M, Degenhardt, C, Pisarev, R V
Format: Article
Language:English
Online Access:Get full text
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Summary:A spontaneous or field induced "hidden" phase transition with antiferromagnetic-to-ferromagnetic reordering is disclosed in multiply frustrated hexagonal ErMnO3. It is revealed by Faraday rotation and second harmonic generation as sublattice-sensitive probes to the Er and Mn systems. The acquired phase diagram in the magnetic-field-temperature plane is shown to be a consequence of a broken geometric frustration between the Er and Mn lattices, giving way to anisotropic superexchange between the 3d and 4f ions.
ISSN:0031-9007
DOI:10.1003/PhysRevLett.88.027203