Noncollinear antiferromagnetic structure and physical properties of CrRhAs with distorted kagome lattice
arXiv:2605.07540 · doi:10.1103/m1yw-sslt
Abstract
CrRhAs was theoretically proposed to be a kagome metal with unusual magnetic ground states; however, little is known about its magnetic structure and physical properties experimentally. Here, we present an experimental investigation of CrRhAs with ZrNiAl-type structure and a distorted Cr kagome lattice. CrRhAs is an antiferromagnet with TN = 149 K. Powder neutron diffraction analysis reveals a noncollinear antiferromagnetic structure with propagation vector k = (1/3, 1/3, 1/2), which features a ferromagnetic second nearest neighbor coupling in the kagome plane that is different from the prediction in previous density functional theory calculations. Furthermore, CrRhAs exhibits anomalous electrical transport properties which are possibly related to multiband effects and strong spin fluctuations. For the temperature-dependent longitudinal resistivity \r{ho}xx, it is semiconductinglike above TN and becomes metallic below TN . The Hall coefficients exhibit two sign changes near 70 and 300 K. Combined with the results of heat capacity measurements, a large Kadowaki-Woods ratio α = 33.9 μΩ cm mol2 K2/J2 is obtained. The above results suggest CrRhAs is a strongly correlated kagome metal with multiband and noncollinear magnetic structure features.
arXiv comment8 pages, 5 figures. Published in PHYSICAL REVIEW B 113, 184430 (2026)
References in corpus (29)
- Discovery of unconventional chiral charge order in kagome superconductor KV3Sb5
- Evidence for Magnetic Weyl Fermions in a Correlated Metal
- Discovery of a quantum limit Chern magnet TbMn6Sn6
- Topological kagome magnets and superconductors
- Superconductivity and normal-state properties of kagome metal RbV3Sb5 single crystals
- Observation of Unconventional Charge Density Wave without Acoustic Phonon Anomaly in Kagome Superconductors AV3Sb5 (A=Rb,Cs)
- Discovery of charge density wave in a correlated kagome lattice antiferromagnet
- Unified explanation of the Kadowaki-Woods ratio in strongly correlated materials
- Charge density wave in kagome lattice intermetallic ScV6Sn6
- Magnetic Field Effects on Transport Properties of PtSn4
- AVSb Kagome Superconductors: Progress and Future Directions
- Near-room-temperature giant topological Hall effect in antiferromagnetic kagome metal YMn6Sn6
- In-plane magnetic field induced double fan spin structure with -axis component in metallic kagome antiferromagnet YMnSn
- Magnetic Field Induced Non-Fermi-Liquid Behavior in YbAgGe Single Crystal
- Realization of the kagome spin ice state in a frustrated intermetallic compound
- Thermodynamic and transport properties of RAgGe (R=Tb-Lu) single crystals
- Quantum bicriticality in the heavy-fermion metamagnet YbAgGe
- Kinetic ferromagnetism on a kagome lattice
- Angular dependent planar metamagnetism in the hexagonal compounds TbPtIn and TmAgGe
- Topological Hall Effect Driven by Short-Range Magnetic Orders in EuZnAs
- Time-reversal-like degeneracies distinguished by the anomalous Hall effect in a metallic kagome ice compound
- FePd2Te2: An Anisotropic Two-Dimensional Ferromagnet with One-Dimensional Fe Chains
- GdPtPb: A non collinear antiferromagnet with distorted Kagomé lattice
- Investigating the magneto-elastic properties in FeSn and FeSn flat band metals
- CrRhAs: a member of a large family of metallic kagome antiferromagnets
- Chemical Rules for Stacked Kagome and Honeycomb Topological Semimetals
- FeGe1-xSbx:a series of novel kagome metals with noncollinear antiferromagnetism
- Evolution of superconductivity and antiferromagnetic order in Ba(FeCoV)As
- Correlation stabilized ferromagnetic MnRuAs with distorted kagome lattice