Anisotropic electrical and thermal magnetotransport in the magnetic semimetal GdPtBi
Schindler C, Galeski S, Schnelle W, Wawrzynczak R, Abdel-Haq W, Guin SN, Kroder J, Kumar N, Fu C, Borrmann H, Shekhar C, Felser C, Meng T, Grushin AG, Zhang Y, Sun Y, Gooth J (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 101
Article Number: 125119
Journal Issue: 12
DOI: 10.1103/PhysRevB.101.125119
Abstract
The half-Heusler rare-earth intermetallic GdPtBi has recently gained attention due to peculiar magnetotransport phenomena that have been associated with the possible existence of Weyl fermions, thought to arise from the crossings of spin-split conduction and valence bands. On the other hand, similar magnetotransport phenomena observed in other rare-earth intermetallics have often been attributed to the interaction of itinerant carriers with localized magnetic moments stemming from the 4f shell of the rare-earth element. In order to address the origin of the magnetotransport phenomena in GdPtBi, we performed a comprehensive study of the magnetization, electrical, and thermal magnetoresistivity on two single-crystalline GdPtBi samples. In addition, we performed an analysis of the Fermi surface via Shubnikov-de Haas oscillations in one of the samples and compared the results to ab initio band structure calculations. Our findings indicate that the electrical and thermal magnetotransport in GdPtBi cannot be solely explained by Weyl physics and is strongly influenced by the interaction of both itinerant charge carriers and phonons with localized magnetic Gd ions and possibly also paramagnetic impurities.
Involved external institutions
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
Technische Universität Dresden
Germany (DE)
University of Grenoble Alpes (UGA) / Université de Grenoble
France (FR)
Germany (DE)
Technische Universität Dresden
Germany (DE)
University of Grenoble Alpes (UGA) / Université de Grenoble
France (FR)
How to cite
APA:
Schindler, C., Galeski, S., Schnelle, W., Wawrzynczak, R., Abdel-Haq, W., Guin, S.N.,... Gooth, J. (2020). Anisotropic electrical and thermal magnetotransport in the magnetic semimetal GdPtBi. Physical Review B, 101(12). https://doi.org/10.1103/PhysRevB.101.125119
MLA:
Schindler, Clemens, et al. "Anisotropic electrical and thermal magnetotransport in the magnetic semimetal GdPtBi." Physical Review B 101.12 (2020).
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