Linear magnetoresistance and anomalous Hall effect in the superconductor NiBi3
Gabriel Sant'ana, Jully Paola Peña Pacheco, David Möckli, Fabiano Mesquita da Rosa, Sergio Garcia Magalhães, Andre Avelino Pasa, Paulo Pureur, Milton Andre Tumelero
DOI 10.1103/y3wb-hv8c · Physical Review B
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Abstract
The NiBi3 compound exhibits a compelling interplay between superconductivity and magnetism, further enriched by topological characteristics that make it an exceptional platform for exploring emergent electronic phenomena. Here, we report experimental evidence of unconventional magnetic phenomena in high-quality single crystals of NiBi3, revealed through detailed magnetotransport measurements. The magnetoresistance increases with temperature, featuring two distinct behaviors, a classical ordinary component at high fields and a linear contribution at low magnetic fields. In addition, anomalous Hall effect signals persist down to the superconducting transition temperature and vanish at 150 K. These observations suggest that magnetic fluctuations play a significant role in charge transport in NiBi3, highlighting the influence of magnetic correlations and strong spin-orbit coupling in the electronic structure. Our findings underscore the complex and multifaceted nature of this material.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NiBi3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4 | Pressure not reported | onset |
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