The quantum anomalous Hall effect is a transport phenomenon that has implications in the search for Majorana fermions and quantum metrology. Here, the authors prepare a quantum anomalous Hall bar composed of a magnetic/non-magnetic topological insulating selective-area heterostructure and observe a modulation of the chiral and helical transports at the interface between the two materials by transport measurements.
- Huimin Sun
- Yu Huang
- Qing Lin He
