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APS » Journals » Phys. Rev. Lett. » Volume 92 » Issue 9
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Phys. Rev. Lett. 92, 095502 (2004) [4 pages]

Spectroscopic Imaging of Single Atoms Within a Bulk Solid

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M. Varela1, S. D. Findlay2, A. R. Lupini1, H. M. Christen1, A. Y. Borisevich1, N. Dellby3, O. L. Krivanek3, P. D. Nellist3, M. P. Oxley2, L. J. Allen2, and S. J. Pennycook1
1Condensed Matter Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6030, USA
2School of Physics, University of Melbourne, Victoria 3010, Australia
3Nion Co., 1102 8th Street, Kirkland, Washington 98033, USA

Received 5 December 2003; published 3 March 2004

The ability to localize, identify, and measure the electronic environment of individual atoms will provide fundamental insights into many issues in materials science, physics, and nanotechnology. We demonstrate, using an aberration-corrected scanning transmission electron microscope, the spectroscopic imaging of single La atoms inside CaTiO3. Dynamical simulations confirm that the spectroscopic information is spatially confined around the scattering atom. Furthermore, we show how the depth of the atom within the crystal may be estimated.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.095502
DOI:
10.1103/PhysRevLett.92.095502
PACS:
61.14.–x, 61.85.+p
 
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