Novel defect-tuning strategy could boost topological surface conduction

Scientific Achievement: Novel defect control and chemical doping strategies are discovered to suppress the detrimental bulk conduction in the antiferromagnetic topological insulators MnBi₂Te₄ and MnBi₄Te₇.

Significance and Impact: The results of this work will aid the observation of exotic topological quantum states, which have potential applications in future electronic devices.

DOI: 10.1002/adfm.202006516