J. Phys. Colloques
Volume 46, Numéro C9, Décembre 1985Workshop on Investigations of Higher Order Correlation Functions
|Page(s)||C9-63 - C9-68|
J. Phys. Colloques 46 (1985) C9-63-C9-68
MEASUREMENT OF AN ATOMIC POSITION COHERENCE LENGTH IN a-GeJ.M. Rodenburg
Cavendish Laboratory, Madingley Road, Cambridge, CB3 OHE, U.K.
A scanning transmission electron microscope (STEM) has been used to obtain microdiffraction patterns from small volumes (3 - 650 nm3) of a-Ge. These are recorded on new high-resolution, high-efficiency instrumentation. It appears as if the reciprocal space of even comparatively large volumes (30 thousand atoms) contains statistically significant, spherically anisotropic fluctuations.