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14–17 Mar 2022
Europe/Berlin timezone

Potential new vortex phase in antiferromagnetic incommensurate magnet Ba₂CuGe₂O₇

17 Mar 2022, 09:20
20m
Talk Solid State Physics and Crystal Physics Crystal Physics

Speaker

Mr Michał Dembski-Villalta (Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, D-85748 Garching, Germany)

Description

The existence of a vortex phase with non-trivial topological properties in an antiferromagnetic incommensurate magnet Ba₂CuGe₂O₇ has been verified, by means of neutron scattering and bulk measurements of specific heat and AC susceptibility. Despite lacking evidence of any signature of a phase transition in the bulk magnetisation and specific heat measurements, hints towards the presence of a vortex phase were found in the neutron scattering data.

Primary authors

Mr Michał Dembski-Villalta (Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, D-85748 Garching, Germany) Prof. Markus Garst (Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, 76049 Karlsruhe, Germany) Dr Benjamin Wolba (Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, 76049 Karlsruhe, Germany) Dr Eric Ressouche (Université Grenoble Alpes, CEA, IRIG, MEM, MDN, 38000 Grenoble, France) Dr Alexandra Turrini (Laboratory for Neutron Scattering and Imaging (LNS), Paul Scherrer Institut (PSI), CH-5232 Villigen, Switzerland) Mr Alexander Engelhardt (Physikdeparment E51, Technische Universität München, D-85748 Garching, Germany) Dr Sebastian Mühlbauer (Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, D-85748 Garching, Germany)

Presentation materials