Journal
PHYSICAL REVIEW B
Volume 98, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.98.115165
Keywords
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Funding
- NSF [DMR-1506618, EFMA-1542789, DMR-1255607]
- U.S. Department of Energy (DOE) [DE-SC0002623]
- DOE [DE-AC02-05CH11231]
- Alfred P. Sloan Research Fellowship
- ARO Young Investigator Program [W911NF1810198]
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By combining scanning tunneling microscopy/spectroscopy and first-principles calculations, we systematically study the local electronic states of magnetic dopants V and Cr in the topological insulator (TI) Sb2Te3. Spectroscopic imaging shows diverse local defect states between Cr and V, which agree with our first-principle calculations. The unique spectroscopic features of V and Cr dopants provide electronic fingerprints for the codoped magnetic TI samples with the enhanced quantum anomalous Hall effect. Our results also facilitate the exploration of the underlying mechanism of the enhanced quantum anomalous Hall temperature in Cr/V codoped TIs.
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