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Regensburg 2013 – scientific programme

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MA: Fachverband Magnetismus

MA 16: Poster I

MA 16.9: Poster

Tuesday, March 12, 2013, 10:30–13:30, Poster D

Mechanisms of Multiferroicity of GdMnO3 explored by Resonant Soft X-Ray Scattering in High Magnetic Fields — •Enrico Schierle1, Victor Soltwisch1, Christoph Trabant1,2, Alex Frano1,3, Sven Landsgesell1, Fabiano Yokaichiya1,4, Detlef Schmitz1, Andrej Maljuk1,5, Christian Schüßler-Langeheine1, Ralf Feyerherm1, Dimitri Argyriou1,6, and Eugen Weschke11Helmholtz-Zentrum Berlin, Germany — 2Universität zu Köln, Germany — 3MPI-FKF Stuttgart, Germany — 4Laboratrio Nacional de Luz Sincrotron, Campinas-SP, Brasil — 5IFW, Dresden, Germany — 6ESS, Lund, Sweden

Several orthorhombic REMnO3 oxides show strongly coupled ferroelectric (FE) and magnetic order, with FE polarization induced by Mn-spin cycloids[1,2]. There is now growing evidence for a decisive role of ordering of the RE-4f moments as well[3-5]. GdMnO3 seems to be the prime candidate for multiferroicity connected with magnetic RE order[4]. We employed Resonant Soft X-Ray Scattering to explore the magnetic Gd-4f and Mn-3d spin order and its coupling to ferroelectricity. While the prominent features can be already observed in the Zero-field FE phase, detailed knowledge could be derived by studying the magnetic field stabilized FE phase using the High-Field-Diffractometer operated at the UE46-PGM-1 beam line at BESSY II.
[1] Kimura et al., Nature 426, 55-58 (2003) [2] Kenzelmann et al., PRL 95, 087206 (2005) [3] Schierle et al., PRL 105, 167207 (2010) [4] Feyerherm et al., Journal of Physics: Conference Series 200, 012032 (2010) [5] Walker et al., Science 333, 1273 (2011)

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