title: Surface scattering via bulk continuum states in the 3D topological insulator Bi2Se3.
abstract: We have performed scanning tunneling microscopy and differential tunneling conductance (dI/dV) mapping for the surface of the three-dimensional topological insulator Bi(2)Se(3). The fast Fourier transformation applied to the dI/dV image shows an electron interference pattern near Dirac node despite the general belief that the backscattering is well suppressed in the bulk energy gap region. The comparison of the present experimental result with theoretical surface and bulk band structures shows that the electron interference occurs through the scattering between the surface states near the Dirac node and the bulk continuum states.
authors.affiliation: Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan.
authors.forename: Sunghun
authors.initials: S
authors.lastname: Kim
authors.forename: M
authors.initials: M
authors.lastname: Ye
authors.forename: K
authors.initials: K
authors.lastname: Kuroda
authors.forename: Y
authors.initials: Y
authors.lastname: Yamada
authors.forename: E E
authors.initials: EE
authors.lastname: Krasovskii
authors.forename: E V
authors.initials: EV
authors.lastname: Chulkov
authors.forename: K
authors.initials: K
authors.lastname: Miyamoto
authors.forename: M
authors.initials: M
authors.lastname: Nakatake
authors.forename: T
authors.initials: T
authors.lastname: Okuda
authors.forename: Y
authors.initials: Y
authors.lastname: Ueda
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
authors.forename: A
authors.initials: A
authors.lastname: Kimura