Magnetic and electrical transport properties of the single-crystalline half-Heusler antiferromagnet DyNiSb
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2026
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| author | Agarwal, Abhinav Mishra, Prabuddha Kant Pavlosiuk, Orest Winiarski, Maciej J. Wisniewski, Piotr Kaczorowski, Dariusz |
| author_facet | Agarwal, Abhinav Mishra, Prabuddha Kant Pavlosiuk, Orest Winiarski, Maciej J. Wisniewski, Piotr Kaczorowski, Dariusz |
| contents | High-quality single crystals of the half-Heusler compound DyNiSb were investigated for their low temperature thermodynamic and magnetotransport properties. Magnetic susceptibility, heat capacity, and electrical resistivity measurements revealed two distinct magnetic phase transitions at TN1 = 7.3 K and TN2 = 3.4 K, contrasting with previous reports on polycrystalline samples, which identified only a single transition near TN2 . Moreover, the studied samples were found to exhibit Metal like conductivity, at odds with a semiconducting behavior reported for the polycrystals. Magnetoresistance measurements performed in both transverse and longitudinal configurations revealed in small magnetic fields a weak antilocalization effect that diminishes with increasing temperature, giving way to a positive, monotonic magnetoresistance at high temperatures. Angular-dependent resistivity studies showed a crossover from fourfold to twofold symmetry with increasing magnetic-field strength, suggesting a field-induced reconstruction of the Fermi surface. Our findings highlight a complex magnetic and electrical transport behavior in DyNiSb, highly sensitive to structural disorder and easily tunable by external magnetic field. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2603_07702 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Magnetic and electrical transport properties of the single-crystalline half-Heusler antiferromagnet DyNiSb Agarwal, Abhinav Mishra, Prabuddha Kant Pavlosiuk, Orest Winiarski, Maciej J. Wisniewski, Piotr Kaczorowski, Dariusz Strongly Correlated Electrons Materials Science High-quality single crystals of the half-Heusler compound DyNiSb were investigated for their low temperature thermodynamic and magnetotransport properties. Magnetic susceptibility, heat capacity, and electrical resistivity measurements revealed two distinct magnetic phase transitions at TN1 = 7.3 K and TN2 = 3.4 K, contrasting with previous reports on polycrystalline samples, which identified only a single transition near TN2 . Moreover, the studied samples were found to exhibit Metal like conductivity, at odds with a semiconducting behavior reported for the polycrystals. Magnetoresistance measurements performed in both transverse and longitudinal configurations revealed in small magnetic fields a weak antilocalization effect that diminishes with increasing temperature, giving way to a positive, monotonic magnetoresistance at high temperatures. Angular-dependent resistivity studies showed a crossover from fourfold to twofold symmetry with increasing magnetic-field strength, suggesting a field-induced reconstruction of the Fermi surface. Our findings highlight a complex magnetic and electrical transport behavior in DyNiSb, highly sensitive to structural disorder and easily tunable by external magnetic field. |
| title | Magnetic and electrical transport properties of the single-crystalline half-Heusler antiferromagnet DyNiSb |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2603.07702 |