High-Transparency Al/Bi2Te3 Double-Barrier Heterostructures

Luca Galletti, Sophie Charpentier, Yuxin Song, Dmitry Golubev, Shu M. Wang, Thilo Bauch, Floriana Lombardi

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)


We have fabricated highly transparent Al/Bi2Te3/Al superconductor/normal metal/superconductor double-barrier heterostructures. Transport measurements reveal the presence of multiple Andreev reflections related to two distinct energy gaps that we identify as the induced superconducting gap in the two electrodes. The realization of high-transparency Josephson junctions with topological insulators is an important step towards the study of topological superconductivity and Majorana fermions.

Original languageEnglish
Article number7756380
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number4
Publication statusPublished - 1 Jun 2017
MoE publication typeA1 Journal article-refereed


  • Hybrid junctions
  • Josephson junctions
  • proximity effect
  • Superconducting devices

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