Designing giant Hall response in layered topological semimetals
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-Ln<sub>3</sub>Sn<sub>7</sub> (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. Ln<sub>3</sub>Sn<sub>7</sub> shows high carrier mobilities upwards of 17,000 cm<sup>2</sup> ⋅ V<sup>-1</sup> ⋅ s<sup>-1</sup>, 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<sup>-1</sup> ⋅ cm<sup>-1</sup>-a value over an order of magnitude larger than the established benchmarks in Co<sub>3</sub>Sn<sub>2</sub>S<sub>2</sub> and Fe thin films.
Authors
- Maia G. Vergniory (ORCID: https://orcid.org/0000-0001-7336-3062)
- Leslie Mareike Schoop (ORCID: https://orcid.org/0000-0003-3459-4241)
- R. Yamada (ORCID: https://orcid.org/0000-0002-5078-059X)
- Iñigo Robredo (ORCID: https://orcid.org/0000-0003-1641-354X)
- Max Hirschberger (ORCID: https://orcid.org/0000-0002-1780-1619)
- Milena Jovanović (ORCID: https://orcid.org/0000-0002-0185-0184)
- Fabio Orlandi (ORCID: https://orcid.org/0000-0001-6333-521X)
- Pascal Manuel (ORCID: https://orcid.org/0000-0002-8845-6576)
- Grigorii Skorupskii (ORCID: https://orcid.org/0000-0002-7089-2724)
- Fatmagül Katmer (ORCID: https://orcid.org/0000-0003-1644-4725)
Institutions
- Rutherford Appleton Laboratory (GB)
- Université de Sherbrooke (CA)
- North Carolina State University (US)
- Princeton University (US)
- Luxembourg Institute of Science and Technology (LU)
- RIKEN Center for Emergent Matter Science (JP)
- Donostia International Physics Center (ES)
- The University of Tokyo (JP)
Publication Details
- Journal
- Nature Communications
- Published
- 2024-11-22
- DOI
- https://doi.org/10.1038/s41467-024-54203-3
- Citations
- 6
- Primary Topic
- Topological Materials and Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 2.03
Funders
- National Science Foundation
- David and Lucile Packard Foundation
- Gordon and Betty Moore Foundation
- UK Research and Innovation
- Princeton Center for Complex Materials
- European Commission
- Deutsche Forschungsgemeinschaft
- Austrian Science Fund
- Canada Excellence Research Chairs, Government of Canada
- Eusko Jaurlaritza
- Materials Research Science and Engineering Center, Harvard University
- Science and Technology Facilities Council
- Japan Society for the Promotion of Science
- Japan Science and Technology Agency
- Division of Materials Research
- Core Research for Evolutional Science and Technology
- Air Force Office of Scientific Research