Journal article
Atomic level structural and chemical analysis of Cr-doped Bi₂Se₃
- Abstract:
- We present a study of the structure and chemical composition of the Cr-doped 3D topological insulator Bi2Se3. Single-crystalline thin films were grown by molecular beam epitaxy on Al2O3 (0001), and their structural and chemical properties determined on an atomic level by aberration-corrected scanning transmission electron microscopy and electron energy loss spectroscopy. A regular quintuple layer stacking of the Bi2Se3 film is found, with the exception of the first several atomic layers in the initial growth. The spectroscopy data give direct evidence that Cr is preferentially substituting for Bi in the Bi2Se3 host. We also show that Cr has a tendency to segregate at internal grain boundaries of the Bi2Se3 film.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 891.2KB, Terms of use)
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- Publisher copy:
- 10.1038/srep26549
Authors
+ Engineering and Physical Sciences Research Council
More from this funder
- Funding agency for:
- Collins-McIntyre, L
- Lazarov, V
- Grant:
- EP/K03278X/1
- Publisher:
- Nature Publishing Group
- Journal:
- Scientific Reports More from this journal
- Volume:
- 6
- Article number:
- 26549
- Publication date:
- 2016-01-01
- Acceptance date:
- 2016-05-04
- DOI:
- ISSN:
-
2045-2322
- Pubs id:
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pubs:619292
- UUID:
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uuid:3eea349a-9b98-49b9-a27d-6201624a824c
- Local pid:
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pubs:619292
- Source identifiers:
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619292
- Deposit date:
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2016-05-04
Terms of use
- Copyright holder:
- Ghasemi et al
- Copyright date:
- 2016
- Notes:
- This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
- Licence:
- CC Attribution (CC BY)
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