Anomalous magnetotransport in the single-crystalline half-Heusler antiferromagnet ErPdSb
arXiv:2603.07723 · doi:10.1103/29bg-k9vh
Abstract
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.
10 pages, 7 figures, 5 pages supplemental material
References in corpus (13)
- Bulk Band Gap and Surface State Conduction Observed in Voltage-Tuned Crystals of the Topological Insulator BiSe
- Topological PdBi half-Heusler semimetals: a new family of non-centrosymmetric magnetic superconductors
- Half-Heusler Topological Insulators: A First-Principle Study with the Tran-Blaha Modified Becke-Johnson Density Functional
- Quantum Transport in Topological Semimetals under Magnetic Fields
- Weak Antilocalization Effect and Noncentrosymmetric Superconductivity in a Topologically Nontrivial Semimetal LuPdBi
- Half-Heusler topological insulators
- Magnetic and transport properties of rare-earth-based half-Heusler phases RPdBi: prospective systems for topological quantum phenomena
- Field-induced magnetic phase transitions and the resultant giant anomalous Hall effect in antiferromagnetic half-Heusler DyPtBi
- Anomalous Hall effect and negative longitudinal magnetoresistance in half-Heusler topological semimetal candidates TbPtBi and HoPtBi
- Tuning the Parity Mixing of Singlet-Septet Pairing in a Half-Heusler Superconductor
- Magnetotransport signatures of chiral magnetic anomaly in the half-Heusler phase ScPtBi
- Insulating Half-Heusler TmPdSb with Unusual Band Order and Metallic Surface States
- Tuning of anomalous magnetotransport properties in half-Heusler topological semimetal GdPtBi