Progress in Low Temperature Physics, 9.

Andquot;Progress in Low Temperature Physicsandquot; has been progressing since 1955 to monitor scientific achievements in the realm of low-temperature physics. In the older days, obtaining low temperatures was an aim in itself, whereas nowadays achieving millikelvin temperatures is a routine experimental procedure. However, the properties of materials at these lowest temperatures continue to produce fascinating physics: the liquid, solid and superfluid phases of the quantum fluids 3 He and 4 as well as andquot;newandquot; materials such as high-temperature superconductors and tiny quantum devi.