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MA: Fachverband Magnetismus
MA 13: Altermagnets II
MA 13.11: Vortrag
Dienstag, 18. März 2025, 12:15–12:30, H20
Thermo-electric magnetotransport studies on altermagnetic CrSb — •Sajal Naduvile Thadathil1,2, T. Kotte1, C. Müller3, D. Kriegner4, J. Pospíšil4, R. Firouzmandi5, M. Uhlarz1, M. C. Rahn2, T. Speliotis6, V. Kocsis5, J. Wosnitza1,2, H. Reichlova3, and T. Helm1 — 1High Magnetic Field Laboratory Dresden, (HLD-EMFL), HZDR, Germany — 2Institute of Solid State and Materials Physics, TU Dresden, Germany — 3Institute of Physics, Academy of Science of the Czech Republic — 4Charles University, Czech Republic — 5Leibniz Institute for Solid State and Materials Research, Dresden, Germany — 6Institute of Nanoscience and Nanotechnology, NCSR Demokritos
Recent observations of materials exhibiting properties of both ferromagnets and antiferromagnets, characterized by antiparallel magnetic ordering, have led to the classification of a third distinct magnetic phase known as "altermagnetism". In this study, we investigate the thermo-electric and magnetotransport properties of the altermagnetic candidate material CrSb, using bulk and micron-sized structures fabricated from single crystals. We performed measurements of thermal-transport, magnetoresistance (MR) and the Hall effect between 1.8 and 300 K under magnetic fields up to 14 T. Our results reveal a significant nonlinear field dependence of the Hall resistance, confirmed by similar nonlinear behavior in the thermal Hall effect, providing evidence for multiband physics in CrSb. Additionally, we observe a non-saturating MR up to 14 T. These findings provide new insights into the multiband electronic structure of CrSb.
Keywords: Altermagnetism; CrSb; Magnetotransport; Thermal transport