Ballistic edge states in Bismuth nanowires revealed by SQUID interferometry

  title={Ballistic edge states in Bismuth nanowires revealed by SQUID interferometry},
  author={Anil Murani and Alik Yu. Kasumov and Shamashis Sengupta and Yu. A. Kasumov and Vladimir T. Volkov and Igor I. Khodos and F. Brisset and Rapha{\"e}lle Delagrange and Alexei D Chepelianskii and Richard Deblock and H. Bouchiat and Sophie Gu{\'e}ron},
  journal={Nature Communications},
The protection against backscattering provided by topology is a striking property. In two-dimensional insulators, a consequence of this topological protection is the ballistic nature of the one-dimensional helical edge states. One demonstration of ballisticity is the quantized Hall conductance. Here we provide another demonstration of ballistic transport, in the way the edge states carry a supercurrent. The system we have investigated is a micrometre-long monocrystalline bismuth nanowire with… 
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