期刊
PHYSICAL REVIEW B
卷 104, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.104.155123
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资金
- HLD at HZDR
- Deutsche Forschungsgemeinschaft (DFG) through the Wurzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat [EXC 2147, 390858490]
The study reports the electronic and thermodynamic properties of the antiferromagnetic metal uranium mononitride, showing that in the high-field state, the temperature dependence of resistivity's magnetic contribution is completely suppressed, indicating metallic character. Detailed investigation of the Hall effect provides evidence for a significant Fermi-surface reconstruction as the system is pushed into the high-field state.
We report on the electronic and thermodynamic properties of the antiferromagnetic metal uranium mononitride with a Neel temperature T-N approximate to 53 K. The fabrication of microstructures from single crystals enables us to study the low-temperature metamagnetic transition at approximately 58 T by high-precision magnetotransport, Hall-effect, and magnetic-torque measurements. We confirm the evolution of the high-field transition from a broad and complex behavior to a sharp first-order-like step, associated with a spin flop at low temperature. In the high-field state, the magnetic contribution to the temperature dependence of the resistivity is suppressed completely. It evolves into an almost quadratic dependence at low temperatures indicative of a metallic character. Our detailed investigation of the Hall effect provides evidence for a prominent Fermi-surface reconstruction as the system is pushed into the high-field state.
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