title: Topological surface states with persistent high spin polarization across the Dirac point in Bi2Te2Se and Bi2Se2Te.
abstract: Helical spin textures with marked spin polarizations of topological surface states have been unveiled for the first time by state-of-the-art spin- and angle-resolved photoemission spectroscopy for two promising topological insulators, Bi(2)Te(2)Se and Bi(2)Se(2)Te. Their highly spin-polarized natures are found to be persistent across the Dirac point in both compounds. This novel finding paves a pathway to extending the utilization of topological surface states of these compounds for future spintronic applications.
authors.affiliation: Hiroshima Synchrotron Radiation Center, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima 739-0046, Japan. kmiyamoto@hiroshima-u.ac.jp
authors.forename: K
authors.initials: K
authors.lastname: Miyamoto
authors.forename: A
authors.initials: A
authors.lastname: Kimura
authors.forename: T
authors.initials: T
authors.lastname: Okuda
authors.forename: H
authors.initials: H
authors.lastname: Miyahara
authors.forename: K
authors.initials: K
authors.lastname: Kuroda
authors.forename: H
authors.initials: H
authors.lastname: Namatame
authors.forename: M
authors.initials: M
authors.lastname: Taniguchi
authors.forename: S V
authors.initials: SV
authors.lastname: Eremeev
authors.forename: T V
authors.initials: TV
authors.lastname: Menshchikova
authors.forename: E V
authors.initials: EV
authors.lastname: Chulkov
authors.forename: K A
authors.initials: KA
authors.lastname: Kokh
authors.forename: O E
authors.initials: OE
authors.lastname: Tereshchenko