Thin polycrystalline films of indium nitride can be highly conductive and even
superconductive at
liquid helium temperatures. The superconducting transition temperature
Tc depends on each sample's film structure and carrier density and varies from 0 K to about 3 K. With magnesium doping, the
Tc can be 3.97 K. or nanoclusters, where the small size increases the
critical magnetic field according to the
Ginzburg–Landau theory. == See also ==