Journal
APPLIED PHYSICS LETTERS
Volume 106, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4908175
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Funding
- Japan Society for the Promotion of Science (JSPS) through the Funding Program for World-Leading Innovative RAMP
- D on Science and Technology (FIRST Program)
- Council for Science and Technology Policy (CSTP) under the 'Development and Application of an Atomic-resolution Holography Electron Microscope' program
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Atomic-resolution electromagnetic field observation is critical to the development of advanced materials and to the unveiling of their fundamental physics. For this purpose, a spherical-aberration corrected 1.2-MV cold field-emission transmission electron microscope has been developed. The microscope has the following superior properties: stabilized accelerating voltage, minimized electrical and mechanical fluctuation, and coherent electron emission. These properties have enabled to obtain 43-pm information transfer. On the bases of these performances, a 43-pm resolution has been obtained by correcting lens aberrations up to the third order. Observations of GaN [411] thin crystal showed a projected atomic locations with a separation of 44 pm. (C) 2015 AIP Publishing LLC.
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