This title appears in the Scientific Report :
2013
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.87.035127 in citations.
Please use the identifier: http://hdl.handle.net/2128/5653 in citations.
Spin-polarization limit in $Bi_{2}Te_{3}$ Dirac cone studied by angle- and spin-resolved photoemission experiments and ab initio calculations
Spin-polarization limit in $Bi_{2}Te_{3}$ Dirac cone studied by angle- and spin-resolved photoemission experiments and ab initio calculations
The magnitude of electron spin polarization in topologically protected surface states is an important parameter with respect to spintronics applications. In order to analyze the warped spin texture in Bi2Te3 thin films, we combine angle- and spin-resolved photoemission experiments with theoretical a...
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Personal Name(s): | Herdt, A. (Corresponding author) |
---|---|
Plucinski, L. / Bihlmayer, G. / Mussler, G. / Döring, S. / Krumrain, J. / Grützmacher, D. / Blügel, S. / Schneider, C. M. | |
Contributing Institute: |
Elektronische Eigenschaften; PGI-6 Quanten-Theorie der Materialien; PGI-1 Quanten-Theorie der Materialien; IAS-1 Halbleiter-Nanoelektronik; PGI-9 |
Published in: | Physical Review B Physical review / B, 87 87 (2013 2013) 3 3, S. 035127 035127 |
Imprint: |
College Park, Md.
APS
2013
|
DOI: |
10.1103/PhysRevB.87.035127 |
Document Type: |
Journal Article |
Research Program: |
Exploratory materials and phenomena |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/5653 in citations.
The magnitude of electron spin polarization in topologically protected surface states is an important parameter with respect to spintronics applications. In order to analyze the warped spin texture in Bi2Te3 thin films, we combine angle- and spin-resolved photoemission experiments with theoretical ab initio calculations. We find an in-plane spin polarization of up to ∼45% in the topologically protected Dirac cone states near the Fermi level. The Fermi surface of the Dirac cone state is warped and shows an out-of-plane spin polarization of ∼15%. These findings are in quantitative agreement with dedicated simulations which find electron density of the Dirac cone delocalized over the first quintuple layer with spin reversal occurring in the surface atomic layer. |