Superconductivity in textured Bi clusters/Bi{sub 2}Te{sub 3} films
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 30049, Taiwan (China)
- Institute of Physics, National Chiao Tung University, Hsinchu 300, Taiwan (China)
We report superconductivity at an onset critical temperature below 3.1 K in topological insulator ∼200-nm-thick Bi{sub 2}Te{sub 3} 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 Bi{sub 2}Te{sub 3} films was attributed to the proximity effect of Bi clusters precipitated on the surface of the Bi{sub 2}Te{sub 3} films.
- OSTI ID:
- 22303572
- Journal Information:
- APL Materials, Vol. 2, Issue 9; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2166-532X
- Country of Publication:
- United States
- Language:
- English
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