Physics · Solid State Physics

The temperature dependence of electrical conductivity for three distinct classes of materials—a typical metal, a semiconductor, and a superconductor—is systematically analyzed. Let Curve A represent a material whose conductivity decreases monotonically as temperature rises. Let Curve B represent a material whose conductivity becomes theoretically infinite below a certain critical transition temperature (T c ). Let Curve C represent a material whose electrical conductivity increases significantly as temperature rises. Which of the following correctly matches the curves to their respective materials?