Back to Search
Start Over
Spin-polarized tunneling study of spin-momentum locking in topological insulators.
- Source :
-
Physical Review B: Condensed Matter & Materials Physics . Jun2015, Vol. 91 Issue 23, p235437-1-235437-10. 10p. - Publication Year :
- 2015
-
Abstract
- We demonstrate that the charge-spin conversion efficiency of topological insulators (TI) can be experimentally determined by injecting spin-polarized tunneling electrons into a TI. Through a comparative study between bismuth selenide and bismuth antimony telluride, we verified the topological-surface-state origin of the observed giant spin signals. By injecting energetic electrons into bismuth selenide, we further studied the energy dependence of the effective spin polarization at the TI surface. The experimentally verified large spin polarization, as well as our calculations, provides new insights into optimizing TI materials for near room-temperature spintronic applications. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BISMUTH selenide
*SPIN polarization
*TOPOLOGICAL insulators
*ELECTRONS
*SPINTRONICS
Subjects
Details
- Language :
- English
- ISSN :
- 10980121
- Volume :
- 91
- Issue :
- 23
- Database :
- Academic Search Index
- Journal :
- Physical Review B: Condensed Matter & Materials Physics
- Publication Type :
- Academic Journal
- Accession number :
- 108753755
- Full Text :
- https://doi.org/10.1103/PhysRevB.91.235437