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MA: Fachverband Magnetismus

MA 9: Cooperative Phenomena: Spin Structures and Magnetic Phase Transitions

MA 9.8: Vortrag

Montag, 27. März 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.