Ghasemi, Arsham, Kepaptsoglou, D, Figueroa, A. I. et al. (7 more authors) (2016) Experimental and density functional study of Mn doped Bi2Te3 topological insulator. Materials. 1.4971354. p. 126103. ISSN 1996-1944
Abstract
We present a nanoscale structural and density functional study of the Mn doped 3D topological insulator Bi2Te3. X-ray absorption near edge structure show that Mn has valency of nominally 2+. Extended x-ray absorption fine structure spectroscopy in combination with electron energy loss spectroscopy (EELS) shows that Mn is a substitutional dopant of Bi and Te and also resides in the van der Waals gap between the quintuple layers of Bi2Te3. Combination of aberration-corrected scanning transmission electron microscopy and EELS show that Mn substitution of Te occurs in film regions with increased Mn concentration. First-principles calculations show that the Mn dopants favor octahedral sites and are ferromagnetically coupled.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © Author(s) 2016. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. |
Keywords: | DFT,density functional theory,topological insulators |
Dates: |
|
Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Funding Information: | Funder Grant number EPSRC EP/K013564/1 |
Depositing User: | Pure (York) |
Date Deposited: | 28 Nov 2016 16:51 |
Last Modified: | 21 Jan 2025 17:23 |
Published Version: | https://doi.org/10.1063/1.4971354 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1063/1.4971354 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:108591 |