Abstract
We report the discovery of a strong interaction between electron-hole droplets and dislocation lines in ultrapure Ge. The normal, phonon wind produced, flow pattern of droplets is strongly perturbed by the presence of even a single dislocation line. Intense droplet luminescence is observed within about 50 μm of the defect and the droplet flux passing through this region is greatly attenuated. Several possible mechanisms for this surprisingly large interaction range are examined.
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