Electronic chirality in the metallic ferromagnet Fe1/3TaS2
We bring together optical spectroscopy and first-principles calculations to reveal the electronic properties of the chiral ferromagnet Fe1/3TaS2. Signatures of chirality are superimposed upon a complex free-carrier response that emanates from both Ta and Fe bands. These include a honeycomb charge density pattern in the Fe layer and a hole → electron pocket crossover at the K point, low-energy excitations between spin split bands that cross the Fermi surface, and clustered rather than well-separated on-site and charge-transfer excitations. These findings advance the understanding of intercalation and symmetry breaking on the fundamental excitations in metallic chalcogenides.
Physical Review B
Digital Object Identifier (DOI)
Fan, Manuel, I., al-Wahish, A., O’Neal, K. R., Smith, K. A., Won, C. J., Kim, J. W., Cheong, S.-W., Haraldsen, J. T., & Musfeldt, J. L. (2017). Electronic chirality in the metallic ferromagnet Fe1/3TaS2. Physical Review. B, 96(20). https://doi.org/10.1103/PhysRevB.96.205119