Modulated crystals have been intensively investigated over the past
several years and it is now evident that an understanding of their
crystallography and microstructure is fundamental to the elucidation of
the physical properties and phase transitions in these materials. This
book brings together for the first time the crystallographic
descriptions and experimental methods for the structural and
microstructural analysis of modulated crystals as described by
well-known researchers in the various areas. The emphasis is on charge
density wave modulations, and the detailed analysis of the prototypical
NbTe4/TaTe4 system gives practical applications of the methods. Scanning
Tunnelling Microscopy is a new technique providing significant new
insights into atomic scale details of the modulations' structures and a
chapter on this method is included.