Communications Materials (Jul 2020)

Josephson current mediated by ballistic topological states in Bi2Te2.3Se0.7 single nanocrystals

  • Vasily S. Stolyarov,
  • Dmitry S. Yakovlev,
  • Sergei N. Kozlov,
  • Olga V. Skryabina,
  • Dmitry S. Lvov,
  • Amir I. Gumarov,
  • Olga V. Emelyanova,
  • Pavel S. Dzhumaev,
  • Igor V. Shchetinin,
  • Razmik A. Hovhannisyan,
  • Sergey V. Egorov,
  • Andrey M. Kokotin,
  • Walter V. Pogosov,
  • Valery V. Ryazanov,
  • Mikhail Yu. Kupriyanov,
  • Alexander. A. Golubov,
  • Dimitri Roditchev

DOI
https://doi.org/10.1038/s43246-020-0037-y
Journal volume & issue
Vol. 1, no. 1
pp. 1 – 11

Abstract

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Topological insulators in contact with a superconductor could house unusual physical states such as Majorana fermions. Here, the authors fabricate and report the electron-transport characteristics of Josephson junctions built using a nanoscale topological insulator, finding evidence for ballistic transport in the surface states of the nanocrystals.