Absence of evidence for chiral Majorana modes in quantum anomalous Hall-superconductor devices

@article{Kayyalha2020AbsenceOE,
  title={Absence of evidence for chiral Majorana modes in quantum anomalous Hall-superconductor devices},
  author={Morteza Kayyalha and Di Xiao and Ruoxi Zhang and Jaeho Shin and Jue Jiang and Fei Wang and Yi-Fan Zhao and Run Xiao and Ling Zhang and Kajetan M. Fijalkowski and Pankaj K Mandal and Martin Winnerlein and Charles Gould and Qi Li and Laurens W. Molenkamp and Moses H. W. Chan and Nitin Samarth and Cui-Zu Chang},
  journal={Science},
  year={2020},
  volume={367},
  pages={64 - 67}
}
Looking for chiral Majoranas Chiral Majorana modes have been predicted to exist in heterostructures consisting of a quantum anomalous Hall insulator and a superconductor. Kayyalha et al. fabricated more than 30 such samples and used transport measurements to look for signatures of the Majorana modes. The data indicated that the transport signatures previously thought to be associated with Majorana physics could, in their samples, be explained using a more mundane mechanism. Science, this issue… Expand
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