Dresden 2026 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 35: Cooperative Phenomena: Spin Structures and Magnetic Phase Transitions (joint session MA/TT)
TT 35.5: Vortrag
Dienstag, 10. März 2026, 15:00–15:15, POT/0151
Successive field-induced phase transitions in the kagome magnet ErMn6Sn6 — •A. Kurtanidze1,2, Sh. Yamamoto1, K. Uhlirova3, Y. Skourski1, S. Zherlitsyn1, J. Sourd1, T. Herrmannsdörfer1, E. Weschke4, O. Prokhnenko4, H. Nojiri5, B. Eggert6, A. Aubert7, K. Kummer8, K. Skokov7, H. Wende6, and J. Wosnitza1,2 — 1Hochfeld-Magnetlabor Dresden (HLD-EMFL), HZDR, Dresden, Germany — 2Institut für Festkörper- und Materialphysik, TU Dresden, Germany — 3Materials Growth and Measurement Laboratory (MGML), Charles University, Prague, Czech Republic — 4Helmholtz-Zentrum Berlin für Materialien und Energie, BESSY II, Berlin, Germany — 5Institute for Materials Research, Tohoku University, Sendai, Japan — 6Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Germany — 7Functional Materials, Material Science, TU Darmstadt, Germany — 8ESRF, The European Synchrotron, Grenoble, France
The ternary stannides RMn6Sn6 (R = Sc, Y, Gd-Lu) with hexagonal HfFe6Ge6-type structure (P6/mmm) are a key platform for exploring coupled topological electronic and magnetic properties. We focused on single crystals of ErMn6Sn6 and observed successive field-induced phase transitions. Using element-specific x-ray magnetic circular and linear dichroism (XMCD/XMLD) measurements in pulsed magnetic fields up to 30 T, we revealed the microscopic nature of these transitions, supported by thermodynamic data. We discuss Er and Mn moment reorientations and their link to macroscopic results.
Keywords: Topology; Kagome magnets; Field-induced transitions