Designing giant Hall response in layered topological semimetals.

ABSTRACT: Noncoplanar magnets are excellent candidates for spintronics. However, such materials are difficult to find, and even more so to intentionally design. Here, we report a chemical design strategy that allows us to find a series of noncoplanar magnets-Ln₃Sn₇ (Ln = Dy, Tb)-by targeting layered materials that have decoupled magnetic sublattices with dissimilar single-ion anisotropies and combining those with a square-net topological semimetal sublattice. Ln₃Sn₇ shows high carrier mobilities upwards of 17,000 cm² ⋅ V^-1 ⋅ s^-1, and hosts noncoplanar magnetic order. This results in a giant Hall response with an anomalous Hall angle of 0.17 and Hall conductivity of over 42,000 Ω^-1 ⋅ cm^-1-a value over a

SUBMITTER: Skorupskii G 

PROVIDER: S-EPMC11584889 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature