SKM 2023 – scientific programme
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MA: Fachverband Magnetismus
MA 9: Cooperative Phenomena: Spin Structures and Magnetic Phase Transitions
MA 9.8: Talk
Monday, March 27, 2023, 17:00–17:15, HSZ 401
Magnetoelastic coupling in the skyrmion lattice magnet GdRu2Si2 — •Lukas Gries1, Daniel Mayoh2, George Wood2, Geetha Balakrishnan2, and Rüdiger Klingeler1 — 1Kirchhoff Institute for Physics, Heidelberg University, Germany — 2Department of Physics, University of Warwick, United Kingdom
We present high-resolution thermal expansion and magnetostriction studies on the centrosymmetric skyrmion-hosting tetragonal magnet GdRu2Si2 in high magnetic fields up to 15 T. Our data show magnetoelastic coupling associated with the onset of long-range antiferromagnet order in form of pronounced anomalies in thermal expansion and magnetostriction. We extract the uniaxial pressure dependencies of the different phase boundaries and discuss them in terms of spin-lattice coupling. Our data suggest additional phases in magnetic field and allow us to complement the previously published magnetic phase diagram.