Superconductivity of doped endohedral fullerene.

by Prof. Nita Dragoe (Laboratoire d'Etude des Matériaux Hors Equilibre, Université Paris-Sud 11, ORSAY, France)

Tuesday 20 Apr 2010, 11:30 → 13:00 Asia/Kolkata

AG-66 (Colaba Campus)

In this talk I will discuss the obtention of minute amount of endohedral C60 fullerenes, which have one or more atoms trapped inside the cage. I will show spectroscopic evidence of a peculiar molecular negative thermal expansion of the C60 cage when a krypton atom is encaged. Alkali doped endohedrals were synthesized and they are, as expected, superconductors albeit at a slightly lower temperature. Their superconducting properties are discussed in relation with their vibrational spectra.