LaCl shows reconstructed low-energy bands that arise from direct hopping between lanthanum sites and the interstitial anionic-electron lattice, replacing YCl's dice-lattice flat bands and changing the Chern number from 4 to 3.
Additional band crossings along the K-螕 path give Berry -curvature contributions with the same sign, leading to a total Chern number of |饾惗| = 4 )
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Entwined lattice of atoms and anionic electrons in layered electride LaCl
LaCl shows reconstructed low-energy bands that arise from direct hopping between lanthanum sites and the interstitial anionic-electron lattice, replacing YCl's dice-lattice flat bands and changing the Chern number from 4 to 3.