TY  - JOUR
AB  - Determining the detailed spin texture of topological surface states is important when one wants to apply topological insulators in spintronic devices. In principle, the in-plane spin component of the surface states can be measured by a method analogous to the so-called Meservey-Tedrow technique. Herein, it is suggested that the out-of-plane spin component can be determined by spin Hall effect tunneling spectroscopy. An analytical formula that allows to extract the out-of-plane spin component from spin Hall effect tunneling spectra is derived. The formula is tested using realistic tight-binding models of Bi2Se3 and Sb2Te3. It is demonstrated that the extracted out-of-plane spin polarization is in very good agreement with the actual out-of-plane spin polarization.
DA  - 2021
DO  - 10.1002/pssb.202000032
KW  - spin Hall effect
KW  - spin texture
KW  - topological insulators
KW  - tunneling
KW  - spectroscopy
LA  - eng
IS  - 1
PY  - 2021
SN  - 0370-1972
T2  - Physica status solidi B - Basic solid state physics
TI  - Determination of Out-of-Plane Spin Polarization of Topological Surface States by Spin Hall Effect Tunneling Spectroscopy
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-29435921
Y2  - 2024-11-22T11:42:08
ER  -