Anisotropic electrical and thermal magnetotransport in the magnetic semimetal 
GdPtBi

Schindler, Clemens; Galeski, Stanislaw; Schnelle, Walter; Wawrzyńczak, Rafał; Abdel-Haq, Wajdi; Guin, Satya N.; Kroder, Johannes; Kumar, Nitesh; Fu, Chenguang; Borrmann, Horst; Shekhar, Chandra; Felser, Claudia; Meng, Tobias; Grushin, Adolfo G.; Zhang, Yang; Sun, Yan; Gooth, Johannes

doi:10.1103/PhysRevB.101.125119

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Anisotropic electrical and thermal magnetotransport in the magnetic semimetal GdPtBi

MPS-Authors

/persons/resource/persons241691

Schindler, Clemens
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons243479

Galeski, Stanislaw
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126838

Schnelle, Walter
Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons246936

Wawrzyńczak, Rafał
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons246938

Abdel-Haq, Wajdi
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons224668

Guin, Satya N.
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons224547

Kroder, Johannes
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons195511

Kumar, Nitesh
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons209329

Fu, Chenguang
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126541

Borrmann, Horst
Horst Borrmann, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126847

Shekhar, Chandra
Chandra Shekhar, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126601

Felser, Claudia
Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons203664

Zhang, Yang
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons179670

Sun, Yan
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons220347

Gooth, Johannes
Nanostructured Quantum Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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引用

Schindler, C., Galeski, S., Schnelle, W., Wawrzyńczak, R., Abdel-Haq, W., Guin, S. N., Kroder, J., Kumar, N., Fu, C., Borrmann, H., Shekhar, C., Felser, C., Meng, T., Grushin, A. G., Zhang, Y., Sun, Y., & Gooth, J. (2020). Anisotropic electrical and thermal magnetotransport in the magnetic semimetal GdPtBi. Physical Review B, 101(12):, pp. 1-13. doi:10.1103/PhysRevB.101.125119.

引用: https://hdl.handle.net/21.11116/0000-0006-0DC8-B

要旨

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.