Anomalous magnetotransport in the single-crystalline half-Heusler antiferromagnet ErPdSb
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
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2026
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| author | Agarwal, Abhinav Dan, Shovan Winiarski, Maciej J. Pavlosiuk, Orest Wisniewski, Piotr Kaczorowski, Dariusz |
| author_facet | Agarwal, Abhinav Dan, Shovan Winiarski, Maciej J. Pavlosiuk, Orest Wisniewski, Piotr Kaczorowski, Dariusz |
| contents | We report the thermodynamic and magnetotransport properties of the half-Heusler antimonide ErPdSb, studied on single-crystalline samples in wide ranges of temperature and magnetic fields. The compound was found to order antiferromagnetically at 1.2 K. In the paramagnetic state, it shows semimetallic behavior with a broad hump in the temperature-dependent electrical resistivity around 70 K. The results of ab initio calculations of the electronic structure of ErPdSb indicated a bulk insulating nature. In small magnetic fields the magnetoresistance is driven by a weak antilocalization effect, while in strong fields it is negative and describable by the deGennes-Friedel formalism. The Hall effect data indicated that holes are the dominant charge carriers. At 2 K, the Hall conductivity exhibits a sizable anomalous contribution, which is obscured by multiband effects at higher temperatures. The angular magnetoresistance shows unusual features as functions of magnetic field and temperature, pointing to a possible field-induced reconstruction of the Fermi surface. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_07723 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Anomalous magnetotransport in the single-crystalline half-Heusler antiferromagnet ErPdSb Agarwal, Abhinav Dan, Shovan Winiarski, Maciej J. Pavlosiuk, Orest Wisniewski, Piotr Kaczorowski, Dariusz Strongly Correlated Electrons Materials Science We report the thermodynamic and magnetotransport properties of the half-Heusler antimonide ErPdSb, studied on single-crystalline samples in wide ranges of temperature and magnetic fields. The compound was found to order antiferromagnetically at 1.2 K. In the paramagnetic state, it shows semimetallic behavior with a broad hump in the temperature-dependent electrical resistivity around 70 K. The results of ab initio calculations of the electronic structure of ErPdSb indicated a bulk insulating nature. In small magnetic fields the magnetoresistance is driven by a weak antilocalization effect, while in strong fields it is negative and describable by the deGennes-Friedel formalism. The Hall effect data indicated that holes are the dominant charge carriers. At 2 K, the Hall conductivity exhibits a sizable anomalous contribution, which is obscured by multiband effects at higher temperatures. The angular magnetoresistance shows unusual features as functions of magnetic field and temperature, pointing to a possible field-induced reconstruction of the Fermi surface. |
| title | Anomalous magnetotransport in the single-crystalline half-Heusler antiferromagnet ErPdSb |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2603.07723 |