THE PHYSICAL PROPERTIES OF SUPERCONDUCTIVITY

Provided that a material has to have the unique properties such as zero resistance to direct current; extremely high current carrying density; extremely low resistance at high frequencies; extremely low signal dispersion; high sensitivity to magnetic field; exclusion of externally applied magnetic field; rapid single flux quantum transfer; close to speed of light signal transmission, this material can be called as superconductor. Moreover, the most important of these basis properties are that; zero resistivity which means infinite conductivity under its critical temperature and the magnetic inductance which becomes zero inside the superconductor, when cooled below critical temperature in a weak external magnetic field.