Year: 2026
Type: preprint
Abstract: We report profound impacts of the stacking sequence of triangular lattices of magnetic transition metal ions intercalated between the layers of the van der Waals material NbS$_2$. Using single crystal x-ray and neutron diffraction, and transport and magnetization measurements, we show there are two distinct polytypes of $\rm V_{1/3}NbS_2$ with disparate easy axes of magnetization and different anomalous Hall responses. Self-consistent analysis of inelastic neutron scattering data provides evidence for oscillatory RKKY interactions that extend to 1 nm and stabilize quasi-collinear A-type altermagnetic orders in both polytypes though with perpendicular easy axes. The detailed stacking sequence of a bulk polytype crystal dramatically impact its macroscopic anomalous Hall response and magnetism, which suggests a new path to engineer the bulk properties of a layered three dimensional solid.
Source: arXiv (Cornell University)
Authors: Lygouras, Chris J., Prouse, Nathan, Drouin, Jack H., Chen, Youzhe, Garcia-Gassull, Laura, Feng, Zili, Fu, Mingxuan, Fang, Lü, Kolesnikov, Alexander I., Hoffman, Christina, Hao, Yiqing, Cao, Huibo, Siegler, Maxime A., Birgeneau, Robert J., Valentí, Roser, Nakatsuji, Satoru, Broholm, Collin L.
Institutions: Johns Hopkins University, Goethe University Frankfurt, The Institute for Solid State Physics, The University of Tokyo, The University of Tokyo, Oak Ridge National Laboratory, Johns Hopkins Medicine, Lawrence Berkeley National Laboratory, University of California, Berkeley, Canadian Institute for Advanced Research
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, U.S. Department of Energy, Gordon and Betty Moore Foundation, Battelle, Johns Hopkins University, UT-Battelle, Deutsche Forschungsgemeinschaft, Office of Science, Basic Energy Sciences, JST-Mirai Program, Oak Ridge National Laboratory, Lawrence Berkeley National Laboratory
Awards: G1019100964, G1026679911, G1079818582, G1143651532, G121915436, G1286236842, G1286251239, G1299390383, G1645119126, G166562317, G1863003419, G2411683797, G2618837358, Collin Broholm Experimental Investigator Award, G2757267231, G2988778103, G3083819904, G313676650, G3180218165, G3219505319, G3685081974, G3945850812, G3976335900, G4189422804, G419881185, G4423657506, G4501827968, G498139845, G5726405315, MRI: Acquisition of an Advanced Computing Instrument to Integrate Data-Driven Research and Data intensive computing at Johns Hopkins University, G650090426, G660579501, G6652958823, G675320460, G7257739835, G7354628648, TRR 288: Elastisches Tuning und elastische Reaktion elektronischer Quantenphasen der Materie (ELASTOQMAT), G807938293, G8269158468, G8385992436, G8906985441, G8943143067, G89955983, G969889393
OpenAlex ID: W7171630773