Dresden 2026 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 39: Poster Magnetism II
MA 39.18: Poster
Mittwoch, 11. März 2026, 18:00–21:00, P2
Exploring spin reorientation and structural stability in distorted kagome metal — •Jayjit Kumar Dey1, Tomke Glier2, Sourav Chowdhury1, Mouli Roy-Chowdhury3, Subhajit Nandy1, Amir-Abbas Haghighirad4, Dmitry Reznik2, and Moritz Hoesch1 — 1Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany — 2University of Colorado Boulder, Boulder, CO, USA — 3Université Grenoble Alpes, CEA, CNRS, Grenoble INP, SPINTEC, Grenoble, France — 4Karlsruhe Institute of Technology, Karlsruhe, Germany
Distorted kagome metals have emerged as fertile platforms for investigating the interplay between geometrical frustration, magnetoelastic coupling, and exotic electronic states. In this work, we investigate the magnetic anisotropy and spin-reorientation behavior of TbAgGe and DyAgGe using X-ray magnetic circular dichroism (XMCD) and X-ray magnetic linear dichroism (XMLD) at the rare-earth M4,5-edges. XMCD reveals strong magnetocrystalline anisotropy and highlights the gradual evolution of 4f-moment orientation under applied magnetic field. Complementary XMLD measurements provide direct evidence of exchange-driven spin arrangement and local crystal field anisotropy. The robustness of the hexagonal crystal framework is evidenced by Extended X-ray absorption fine structure (EXAFS) and Raman spectroscopy, with no evidence of symmetry breaking despite noticeable shifts in bond angles and interlayer spacing. These results establish spin dynamics and structural stability in distorted kagome systems.
Keywords: Kagome; XMCD; XMLD; EXAFS; Spin reorientation