Ontology highlight
ABSTRACT:
SUBMITTER: Sumida K
PROVIDER: S-EPMC5658381 | biostudies-literature | 2017 Oct
REPOSITORIES: biostudies-literature
Scientific reports 20171026 1
Topological insulators (TIs) possess spin-polarized Dirac fermions on their surface but their unique properties are often masked by residual carriers in the bulk. Recently, (Sb<sub>1-x</sub> Bi <sub>x</sub> )<sub>2</sub>Te<sub>3</sub> was introduced as a non-metallic TI whose carrier type can be tuned from n to p across the charge neutrality point. By using time- and angle-resolved photoemission spectroscopy, we investigate the ultrafast carrier dynamics in the series of (Sb<sub>1-x</sub> Bi <su ...[more]