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MA: Fachverband Magnetismus

MA 17: Poster Session I

MA 17.3: Poster

Dienstag, 8. März 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 Staub¹ — ¹Swiss 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)