School of Physics - Research Publications

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Start date: 2012 × End date: 2013 × Subject: Condensed Matter Physics not elsewhere classified; Expanding Knowledge in the Physical Sciences ×

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    Achromatic Elemental Mapping Beyond the Nanoscale in the Transmission Electron Microscope
    Urban, KW ; Mayer, J ; Jinschek, JR ; Neish, MJ ; Lugg, NR ; Allen, LJ (AMER PHYSICAL SOC, 2013-05-02)
    Newly developed achromatic electron optics allows the use of wide energy windows and makes feasible energy-filtered transmission electron microscopy (EFTEM) at atomic resolution. In this Letter we present EFTEM images formed using electrons that have undergone a silicon L(2,3) core-shell energy loss, exhibiting a resolution in EFTEM of 1.35 Å. This permits elemental mapping beyond the nanoscale provided that quantum mechanical calculations from first principles are done in tandem with the experiment to understand the physical information encoded in the images.