title: 3D atomic imaging by internal-detector electron holography.
abstract: A method of internal-detector electron holography is the time-reversed version of photoelectron holography. Using an energy-dispersive x-ray detector, an electron gun, and a computer-controllable sample stage, we measured a multiple-energy hologram of the atomic arrangement around the Ti atom in SrTiO3 by recording the characteristic Ti Kα x-ray spectra for different electron beam angles and wavelengths. A real-space image was obtained by using a fitting-based reconstruction algorithm. 3D atomic images of the elements Sr, Ti, and O in SrTiO3 were clearly visualized. The present work reveals that internal-detector electron holography has great potential for reproducing 3D atomic arrangements, even for light elements.
authors.affiliation: Tohoku Techno Arch Company, Limited, Sendai 980-8577, Japan.
authors.forename: Akio
authors.initials: A
authors.lastname: Uesaka
authors.forename: Kouichi
authors.initials: K
authors.lastname: Hayashi
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Matsushita
authors.forename: Shigetoshi
authors.initials: S
authors.lastname: Arai