Correlations and incipient antiferromagnetic order within the linear Mn chains of metallic Ti4MnBi2.

ABSTRACT: We report measurements on Ti4MnBi2, where a crystal structure involving linear chains of Mn ions suggests one-dimensional magnetic character. The electrical resistivity is metallic, consistent with the results of electronic-structure calculations that find a robust Fermi surface albeit with moderate electronic correlations. A Curie-Weiss fit to the magnetic susceptibility suggests that the Mn moments are in the low-spin S = 1/2 configuration. Neutron diffraction measurements detect weak antiferromagnetic order within the Mn chains, with further evidence for the small staggered moment coming from the entropy associated with the ordering peak in the specific heat as well as from the results of spin-polarized electronic-structure calculations. The antiferromagnetic moments are apparently asso

SUBMITTER: Pandey A 

PROVIDER: S-EPMC8204450 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature