Gate-tunable Intrinsic Anomalous Hall Effect in Epitaxial MnBi2Te4 Films

Understand

Anomalous Hall effect (AHE) is an important transport signature revealing topological properties of magnetic materials and their spin textures.

• Recently, antiferromagnetic MnBi2Te4 has been demonstrated to be an intrinsic magnetic topological insulator that exhibits quantum AHE in exfoliated nanoflakes.
• However, its complicated AHE behaviors may offer an opportunity for the unexplored correlation between magnetism and band structure.
• Here, we show the Berry curvature dominated intrinsic AHE in wafer-scale MnBi2Te4 thin films.