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Regensburg 2022 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 25: Topological Semimetals

TT 25.11: Talk

Thursday, September 8, 2022, 12:30–12:45, H3

Magnetic Kagome metal ErMn6Sn6Yishui Zhou1, Fabio Orlandi2, Dmitry Khalyavin2, Pascal Manuel2, Thomas Brückel3, and •Yixi Su11Jülich Centre for Neutron Science JCNS at MLZ, Forschungszentrum Jülich, 85747 Garching, Germany — 2ISIS Facility, STFC, Rutherford Appleton Laboratory, Didcot OX11 0QX, UK — 3Jülich Centre for Neutron Science JCNS-2 and Peter Grünberg Institute PGI-4, Forschungszentrum Jülich, 52425 Jülich, Germany

Following the discovery of a quantum-limit magnetic Chern phase in TbMn6Sn6, the correlated topological metal series RMn6Sn6 (R=Gd-Yb, and Y, Lu etc.), that possess an ideal kagome lattice of Mn, have emerged as a new platform to explore the interplay between geometric frustration, non-trivial band topology and magnetism. In particular, for magnetic rare-earth ions contained RMn6Sn6, it has been recently found that the topological transport properties, such as the anomalous Hall effect (AHE) and the topological Hall effect (THE), can be engineered intrinsically by rare-earth ions, thus suggesting a close relationship between the localized rare-earth magnetism, itinerant Mn magnetism and non-trivial band-structure topology. We have carried out the single-crystal growth and physical properties characterization of this series of magnetic kagome metals. Our single-crystal neutron diffraction investigation of ErMn6Sn6 has uncovered a range of magnetic field induced complex magnetic orders that are likely associated to the observed THE in this compound.

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