Competing itinerant and local spin interactions in kagome metal FeGe.

ABSTRACT: The combination of a geometrically frustrated lattice, and similar energy scales between degrees of freedom endows two-dimensional Kagome metals with a rich array of quantum phases and renders them ideal for studying strong electron correlations and band topology. The Kagome metal, FeGe is a noted example of this, exhibiting A-type collinear antiferromagnetic (AFM) order at T_N ≈ 400 K, then establishes a charge density wave (CDW) phase coupled with AFM ordered moment below T_CDW ≈ 110 K, and finally forms a c-axis double cone AFM structure around T_Canting ≈ 60 K. Here we use neutron scattering to demonstrate the presence of gapless incommensurate spin excitations associated with the double cone AFM structure of FeGe at temperatures well above T_Canting</

SUBMITTER: Chen L 

PROVIDER: S-EPMC10907581 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature