TY  - JOUR
AU  - Herdt, A.
AU  - Plucinski, L.
AU  - Bihlmayer, G.
AU  - Mussler, G.
AU  - Döring, S.
AU  - Krumrain, J.
AU  - Grützmacher, D.
AU  - Blügel, S.
AU  - Schneider, C. M.
TI  - Spin-polarization limit in $Bi_{2}Te_{3}$ Dirac cone studied by angle- and spin-resolved photoemission experiments and ab initio calculations
JO  - Physical review / B
VL  - 87
IS  - 3
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2013-05993
SP  - 035127
PY  - 2013
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000313940400001
DO  - DOI:10.1103/PhysRevB.87.035127
UR  - https://juser.fz-juelich.de/record/140030
ER  -