Regensburg 2016 – wissenschaftliches Programm
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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)