What are superconductors?

renu sharmai just want to know the basics about superconductors.....

Special type of conducting material which can carry electric current without offering any resistance. Such a material would let the electrons flow freely. Superconductivity has been achieved at very low temperatures which prevents their use in commercial activities.

High Temperature Super conductors are also are under design.

Super conductors offer no resistance as the oscillations of free electrons is synchronous to the oscillations of atoms in crystal lattice. This makes the movement of electrons to have very little resistance