Fiebig M, Degenhardt C, Pisarev RV. Interaction of frustrated magnetic sublattices in ErMnO3.
PHYSICAL REVIEW LETTERS 2002;
88:027203. [PMID:
11801032 DOI:
10.1103/physrevlett.88.027203]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2001] [Indexed: 05/23/2023]
Abstract
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.
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