title: Experimental realization of a three-dimensional topological insulator phase in ternary chalcogenide TlBiSe₂.
abstract: We report the first observation of a topological surface state on the (111) surface of the ternary chalcogenide TlBiSe₂ by angle-resolved photoemission spectroscopy. By tuning the synchrotron radiation energy we reveal that it features an almost ideal Dirac cone with the Dirac point well isolated from bulk continuum states. This suggests that TlBiSe₂ is a promising material for realizing quantum topological transport.
authors.affiliation: Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kuroda
authors.forename: M
authors.initials: M
authors.lastname: Ye
authors.forename: A
authors.initials: A
authors.lastname: Kimura
authors.forename: S V
authors.initials: SV
authors.lastname: Eremeev
authors.forename: E E
authors.initials: EE
authors.lastname: Krasovskii
authors.forename: E V
authors.initials: EV
authors.lastname: Chulkov
authors.forename: Y
authors.initials: Y
authors.lastname: Ueda
authors.forename: K
authors.initials: K
authors.lastname: Miyamoto
authors.forename: T
authors.initials: T
authors.lastname: Okuda
authors.forename: K
authors.initials: K
authors.lastname: Shimada
authors.forename: H
authors.initials: H
authors.lastname: Namatame
authors.forename: M
authors.initials: M
authors.lastname: Taniguchi