title: Scanning transmission electron microscopy using selective high-order laue zones: three-dimensional atomic ordering in sodium cobaltate.
abstract: A new scanning transmission electron microscopy (STEM) imaging technique using high-order Laue zones (named HOLZ-STEM), a diffraction contrast which has been strenuously avoided or minimized in traditional STEM imaging, can be used to obtain the additional 1D periodic information along the electron propagation axis without sacrificing atomic resolution in the lateral (2D) dimension. HOLZ-STEM has been demonstrated to resolve the 3D long-range Na ordering of Na0.71CoO2. Direct evidence of spiral-like Na-trimer chains twisting along the c axis is unambiguously established in real space.
authors.affiliation: Laboratoire de Physique des Solides, Université Paris-Sud, CNRS-UMR 8502, Orsay, France.
authors.forename: F-T
authors.initials: FT
authors.lastname: Huang
authors.forename: A
authors.initials: A
authors.lastname: Gloter
authors.forename: M-W
authors.initials: MW
authors.lastname: Chu
authors.forename: F C
authors.initials: FC
authors.lastname: Chou
authors.forename: G J
authors.initials: GJ
authors.lastname: Shu
authors.forename: L-K
authors.initials: LK
authors.lastname: Liu
authors.forename: C H
authors.initials: CH
authors.lastname: Chen
authors.forename: C
authors.initials: C
authors.lastname: Colliex