Vulcan (Assimilation²)

Vulcan was the homeworld of the Vulcans in the parallel universe of the United Federation of Planets. In an alternate future shown to Captain Jean-Luc Picard by the Eleventh Doctor, the population of Vulcan had been converted by the Cybermen, their centuries of wisdom and advanced thought lost forever. (COMIC: Assimilation²)

Behind the scenes
The home planet of Mr. Spock, Vulcan's first mention in Star Trek's 1966 premiere  predates The Power of the Daleks, which featured the DWU's own planet Vulcan, by three months. Both shows seem to have selected the name independently.