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Regensburg 2016 – scientific programme

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MA: Fachverband Magnetismus

MA 17: Poster Session I

MA 17.3: Poster

Tuesday, March 8, 2016, 09:30–12:30, Poster B1

Resonant Soft X-Ray Diffraction on Chiral Multiferroic Ba3TaFe3Si2O14 — •Mahesh Ramakrishnan1, Yoav William Windsor1, Laurenz Rettig1, Aurora Alberca1, Elisabeth Bothschafter1, Yves Joly2, Rafik Ballou2, Virginie Simonet2, Pascal Lejay2, Valerio Scagnoli1, and Urs Staub11Swiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland — 2Institut Neel, CNRS and Universite Grenoble Alpes, Grenoble Cedex 9, France

We study the incommensurate spin structure of the multiferroic helical butterfly Ba3TaFe3Si2O14 using resonant soft x-ray diffraction. We investigate the role of the out-of-plane spin moments in the magnetically induced lattice modifications resulting in ferroelectric polarization. We also combine ab initio calculations and results from recent neutron scattering measurements to re-examine the symmetry of the low temperature crystal structure.

[1] Scagnoli V. et al., Phys. Rev. B 88 104417 (2013)

[2] Chaix L. et al., arXiv:1506.06491 (2015)

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