Explain Superconductivity.

Superconductivity- The resistivity of most metals rises with rise in temperature and vice-versa. There are several metals and chemical compounds that resistivity becomes zero while their temperature is brought near 00 Kelvin (-273⁰C). On this stage these metals or compounds are attained superconductivity. Illustration - mercury becomes superconducting at just about 4.5 Kelvin (-268.5⁰C). Superconductivity was discovered through Heike Kamerlingh Onnes. The transition by normal conductivity to superconductivity takes place almost rapidly; this occurs over a very narrow range of temperature approximately 0.050K. The temperature at that the transition takes place from the state of normal conductivity is to which of superconductivity is termed as transition temperature. Diamegnatic and Zero resistivity are two necessary and independent properties of super conducting materials. The super conducting properties can be destroyed through applying magnetic field.