摘要
Skyrmions emerging in centrosymmetric materials have garnered significant interest.GdGa_(2),a recently discovered centrosymmetric antiferromagnet with a triangular lattice,has been proposed to host possible Néel-type skyrmions exhibiting an extremely short magnetic periodicity in the so-called A-phases.Here,we report the magnetic and magnetotransport properties of GdGa_(2) single crystals.Hall anomalies beyond magnetization scaling emerge at intermediate magnetic fields,coinciding with the skyrmion-hosting A-phases.The small amplitude of the Hall anomalies may be attributed to the short period of the spin textures.In contrast,the transport behavior of TbGa_(2) single crystals is well described by a conventional two-band model.This discrepancy likely arises from distinct Ruderman–Kittel–Kasuya–Yosida interaction strengths and/or magnetic anisotropy between the two crystals.Our results establish GdGa_(2) as a new material platform for the exploration of skyrmion physics in centrosymmetric systems.
基金
supported by the National Natural Science Foundation of China(Grant Nos.12274125,12574117,12374105,12174103)。
