Electrical and thermal magnetotransport in altermagnetic CrSb

Sajal Naduvile Thadathil; Christoph Müller; Reza Firouzmandi; Lorenz Farin; Srikanta Goswami; Antonin Badura; Pascal Manuel; Fabio Orlandi; Philipp Ritzinger; Václav Petříček; Marc Uhlarz; Tommy Kotte; Michal Baj; Marein C. Rahn; Thanassis Speliotis; Markéta Žáčková; Jiří Pospíšil; Bernd Büchner; Jochen Wosnitza; Helena Reichlová; Vilmos Kocsis; Toni Helm; Dominik Kriegner

arXiv · 2603.25820

Electrical and thermal magnetotransport in altermagnetic CrSb

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Abstract

Chromium antimonide has emerged as a key material platform for studying altermagnetism because of its simple binary composition, high N\'eel temperature, and semimetallic electronic structure. Here, we investigate electrical and thermal magnetotransport in single-crystalline CrSb using steady-and pulsed-magnetic fields up to 65 T, and complement these measurements with neutron diffraction and magnetization data. We confirm the compensated magnetic structure and observe a large nonsaturating magnetoresistance together with a pronounced nonlinear Hall response at low temperatures. Multicarrier modeling, supported by mobility-spectrum analysis, reveals coexisting electron- and hole-like charge carriers with mobilities up to ~3000 cm2/Vs and shows that the number of transport channels that can be resolved strongly depends on the accessible magnetic-field range. Thermal-transport measurements further reveal a nonlinear thermal Hall response and a thermal conductivity substantially exceeding a simple Wiedemann-Franz law. The broadly similar field and temperature evolution of electrical and thermal transport point to a dominant electronic contribution, while the remaining deviations indicate additional heat-carrying channels.

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Sajal Naduvile Thadathil, Christoph Müller, Reza Firouzmandi, Lorenz Farin, Srikanta Goswami, Antonin Badura, Pascal Manuel, Fabio Orlandi, Philipp Ritzinger, Václav Petříček, Marc Uhlarz, Tommy Kotte, Michal Baj, Marein C. Rahn, Thanassis Speliotis, Markéta Žáčková, Jiří Pospíšil, Bernd Büchner, Jochen Wosnitza, Helena Reichlová, Vilmos Kocsis, Toni Helm, Dominik Kriegner. 2026-03-26. Electrical and thermal magnetotransport in altermagnetic CrSb. https://arxiv.org/abs/2603.25820

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