SKM 2021 – scientific programme
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MA: Fachverband Magnetismus
MA 18: Posters Magnetism V
MA 18.13: Poster
Friday, October 1, 2021, 10:00–13:00, P
Exploring the phase diagram of GdTe3 using thermal expansion and magnetostriction — •Thom Ottenbros1, Claudius Müller1, Shiming Lei2, Ratnadwip Shingha2, Leslie Schoop2, Nigel Hussey1,3, and Steffen Wiedmann1 — 1HFML-EMFL, Nijmegen, Netherlands — 2Princeton University, USA — 3University of Bristol, UK
Thermal expansion and magnetostriction are powerful tools to explore phase transitions and ultimately determine the phase diagram of correlated electron systems.
We present the mapping of the phase diagram of GdTe3, a van der Waals layered antiferromagnetic metal with high carrier mobility [1]. At zero magnetic field, we find three magnetic transitions in the thermal expansion: a Néel transition at 12.0 K, and two others at 7.0 and 10.0 K. In magnetostriction experiments up to 30 T and at 1.3 K, another transition occurs around 20 T before the onset of quantum oscillations.
Furthermore, we give an overview of capacitive dilatometry at the HFML-EMFL in Nijmegen and discuss new high field experiments using a uniaxial stress dilatometer [2].
[1] S. Lei et al., Science Advances 6, eaay6407 (2020). [2] R. Kuechler et al., Rev. Sci. Inst. 87, 073903 (2016).