Open Questions: Condensed Matter Physics

The quantum solid that defies expectation: May 2007 article from Physics World, by Matthew Chalmers. "In 2004 researchers reported the first clear evidence for superfluidity in solid helium-4. However, Matthew Chalmers describes recent experimental and theoretical work that has brought the very existence of such a "supersolid" into question."
Waves and turbulence cause a stir in superfluids: August 2003 article from Physics World, by Carlo F Barenghi. "Two recent experiments have highlighted the links between low-temperature physics and fluid dynamics."
Ultracold plasmas come of age: May 2001 article from Physics World, by Phillip Gould and Edward Eyler. "Recent experiments performed on ultralow-temperature plasmas created from laser-cooled atoms are unleashing a flood of new ideas in atomic physics.."
Liquid hydrogen turns superfluid: November 2000 article from Physics World, by Peter McClintock. "Recent work at Göttingen has revealed convincing evidence for superfluidity in liquid hydrogen, the only liquid other than helium to exhibit this quantum behaviour."
Double first for superfluids: March 2000 news article from Physics World about the observation of a double-quantum vortex in superfluid helium-3.
Trapping breakthrough for molecules: September 1998 news article from Physics World about a new technique to trap ultracold molecules.