Superconductivity in textured Bi clusters/Bi2Te3 films

Phuoc Huu Le, Wen Yen Tzeng, Hsueh Ju Chen, Chih-Wei Luo, Jiunn-Yuan Lin, Jih-Perng Leu

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We report superconductivity at an onset critical temperature below 3.1 K in topological insulator ∼200-nm-thick Bi2Te3 thin films grown by pulsed laser deposition. Using energy-dispersive X-ray spectroscopy elemental mapping and Auger electron spectroscopy elemental depth profiling, we clearly identified bismuth (Bi) precipitation and Bi cluster signatures. Superconductivity in the Bi2Te3 films was attributed to the proximity effect of Bi clusters precipitated on the surface of the Bi2Te3 films.

Original languageEnglish
Article number096105
Number of pages7
JournalAPL Materials
Volume2
Issue number9
DOIs
StatePublished - 1 Jan 2014

Keywords

  • TOPOLOGICAL INSULATOR
  • THIN-FILMS
  • TEMPERATURE
  • SB2TE3
  • BI2SE3
  • BI2TE3

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