Fig. 2: Kagome lattice model. | npj Quantum Materials

Fig. 2: Kagome lattice model.

From: Probing loop currents and collective modes of charge density waves in Kagome materials with NV centers

Fig. 2

a The Kagome lattice with triple-Q CDW order. Here, A, B, and C label the three sublattices, and the phases are indicated by the arrows in the iCDW phase. The red circles are the loop currents in the small triangle plaquettes. b The single-particle electronic band structure of the Kagome lattice toy model. c The schematic plot of the original Brillouin zone (black solid line) and the folded Brillouin zone (gray line). The M points, with wavefunctions localized on the A, B, and C sublattices, are highlighted. d A schematic phase diagram controlled by b in Eq. (2). When b < 0 (b > 0), the rCDW (iCDW) phase tends to be favored. e The Feynman diagram representation for the free energy terms (top panel for electron-electron interaction, bottom panel for electron-phonon interaction).

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