Thermal conduction and electric conductivity of semiconducting CuFeS2 films at low temperatures
Aliev F.Yu., Kasumova E.G.
The thermal expansion and electric conductivity of semiconducting antiferromagnetic films were measured down to 2°K. 'Vanishing' of the resistance and a jump in the thermal-expansion coefficient were observed in the limited region 88 < Τ < 90°K. This is taken as evidence of a superconducting transition.