Giant Anomalous Hall Effect due to Double-Degenerate Quasiflat Bands
Giant Anomalous Hall Effect due to Double-Degenerate Quasiflat Bands
We propose a novel approach to achieve a giant anomalous Hall effect (AHE) in materials with flat bands (FBs). FBs are accompanied by small electronic bandwidths, which consequently increases the momentum separation ($\mathcal{K}$) within pair of Weyl points and, thus, the integrated Berry curvature. Starting from a simple model with …