Determination of Out-of-Plane Spin Polarization of Topological Surface States by Spin Hall Effect Tunneling Spectroscopy

Götte M, Dahm T (2020)
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS: 2000032.

Zeitschriftenaufsatz | E-Veröff. vor dem Druck | Englisch
 
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Abstract / Bemerkung
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.
Stichworte
spin Hall effect; spin texture; topological insulators; tunneling; spectroscopy
Erscheinungsjahr
2020
Zeitschriftentitel
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
Art.-Nr.
2000032
ISSN
0370-1972
eISSN
1521-3951
Page URI
https://pub.uni-bielefeld.de/record/2943592

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Götte M, Dahm T. Determination of Out-of-Plane Spin Polarization of Topological Surface States by Spin Hall Effect Tunneling Spectroscopy. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS. 2020: 2000032.
Götte, M., & Dahm, T. (2020). Determination of Out-of-Plane Spin Polarization of Topological Surface States by Spin Hall Effect Tunneling Spectroscopy. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2000032. doi:10.1002/pssb.202000032
Götte, M., and Dahm, T. (2020). Determination of Out-of-Plane Spin Polarization of Topological Surface States by Spin Hall Effect Tunneling Spectroscopy. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS:2000032.
Götte, M., & Dahm, T., 2020. Determination of Out-of-Plane Spin Polarization of Topological Surface States by Spin Hall Effect Tunneling Spectroscopy. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, : 2000032.
M. Götte and T. Dahm, “Determination of Out-of-Plane Spin Polarization of Topological Surface States by Spin Hall Effect Tunneling Spectroscopy”, PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2020, : 2000032.
Götte, M., Dahm, T.: Determination of Out-of-Plane Spin Polarization of Topological Surface States by Spin Hall Effect Tunneling Spectroscopy. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS. : 2000032 (2020).
Götte, Matthias, and Dahm, Thomas. “Determination of Out-of-Plane Spin Polarization of Topological Surface States by Spin Hall Effect Tunneling Spectroscopy”. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS (2020): 2000032.