title: Direct imaging of lithium atoms in LiV₂O₄ by spherical aberration-corrected electron microscopy.
abstract: We visualized lithium atom columns in LiV₂O₄ crystals by combining scanning transmission electron microscopy with annular bright field (ABF) imaging using a spherical aberration-corrected electron microscope (R005) viewed from the [110] direction. The incident electron beam was coherent with a convergent angle of 30 mrad (semi-angle), and the detector collected scattered electrons over 20-30 mrad (semi-angle). The ABF image showed dark dots corresponding to lithium, vanadium and oxygen columns.
authors.affiliation: Japan Science and Technology Agency, CREST, 5 Sanbancho, Chiyoda-ku, Tokyo, 102-0075, Japan. oshima.y.aa@m.titech.ac.jp
authors.forename: Yoshifumi
authors.initials: Y
authors.lastname: Oshima
authors.forename: Hidetaka
authors.initials: H
authors.lastname: Sawada
authors.forename: Fumio
authors.initials: F
authors.lastname: Hosokawa
authors.forename: Eiji
authors.initials: E
authors.lastname: Okunishi
authors.forename: Toshikatsu
authors.initials: T
authors.lastname: Kaneyama
authors.forename: Yukihito
authors.initials: Y
authors.lastname: Kondo
authors.forename: Seiji
authors.initials: S
authors.lastname: Niitaka
authors.forename: Hidenori
authors.initials: H
authors.lastname: Takagi
authors.forename: Yasumasa
authors.initials: Y
authors.lastname: Tanishiro
authors.forename: Kunio
authors.initials: K
authors.lastname: Takayanagi