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- Title
Substitution-induced spin-splitted surface states in topological insulator (Bi<sub>1−x</sub>Sb<sub>x</sub>)<sub>2</sub>Te<sub>3</sub>.
- Authors
He, Xiaoyue; Li, Hui; Chen, Lan; Wu, Kehui
- Abstract
We present a study on surface states of topological insulator (Bi1−xSbx)2Te3 by imaging quasiparticle interference patterns (QPI) using low temperature scanning tunneling microscope. Besides the topological Dirac state, we observed another surface state with chiral spin texture within the conduction band range. The quasiparticle scattering in this state is selectively suppressed. Combined with first-principles calculations, we attribute this state to a spin-splitted band induced by the substitution of Bi with Sb atoms. Our results demonstrate that the coexistence of topological order and alloying may open wider tunability in quantum materials.
- Subjects
TOPOLOGICAL insulators; QUASIPARTICLES; ELECTRIC insulators &; insulation; QUANTUM theory; ATOMS
- Publication
Scientific Reports, 2015, p8830
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep08830