Figure 1
Illustration: Lawrence Berkeley National Laboratory

Figure 1: Formation of self-interstitials in germanium, imaged with the TEAM 0.5 aberration-corrected transmission electron microscope by Alloyeau et al. [1]. (Left) High-resolution micrograph of the germanium [110] surface showing location of occupied tetragonal interstitial site (arrow). (Right) 3D representation of the interstitial atom position in a germanium crystal along the [110] direction. The blue shapes indicate the interstitial positions, with the elongation being the noise-limited precision of the measurement.