Fig. 1: ab-plane optical response of Co3Sn2S2.
From: Electronic correlations and flattened band in magnetic Weyl semimetal candidate Co3Sn2S2
a Crystal structure of Co3Sn2S2. A quasi-two-dimensional Co3Sn layer is sandwiched between the sulfur atoms. The magnetic moments on the cobalt sites are along the c-axis. b Electron density of states (DOS) obtained by single-particle ab initio calculations in the FM ground state. The electron DOS near the Fermi energy is mainly contributed by the electronic bands with Co 3d orbital characters. c Several representative reflectance spectra R(ω) measured with the electric field (E) of the incident light parallel to the crystalline ab-plane. The inset shows that the R(ω) up to 700 meV. d Real parts σ1(ω) of the ab-plane optical conductivity at different temperatures. The inset displays the σ1(ω) up to 800 meV.
