The flow of electric current without resistance in certain metals and alloys at temperatures near absolute zero. Perpetual motion on an atomic scale; the conduction of electricity without the slightest power loss - perfect conductivity.
su pEr kan dEk tI vih ti] A property of many metals, alloys, and chemical compounds at temperatures near absolute zero, by which their electrical resistivity vanishes and magnetic fields are expelled.
The ability of some materials to maintain perpetual electric currents without heat or energy loss owing to the complete absence of electrical resistance.
The ability of certain materials to carry an electric current with zero electrical resistance.
The loss in some materials of all electrical resistance at supercold temperatures.
the disappearance of electrical resistance at very low temperatures
Disappearance of electrical resistivity at low temperatures.
The physical phenomenon whereby some materials exhibit zero electrical resistance at low temperatures. Superconductivity points to the possibility of great computational power with little or no heat dissipation (a limiting factor today).
A state in which the electrical resistance of a material is so low that it cannot be measured and appears to be zero.The superconducting state is also characterized by unusual magnetic properties.
the flow of electric current without any resistance in certain metals at temperatures near absolute zero (The superconductors used at Jefferson Lab are cavities made of niobium that are cooled to 2 K by liquid Helium.)
Electrical resistance of a superconductor disappears completely when it is cooled below the critical temperature. The phenomenon is explained by the fact that due to the presence of an energy gap in the charge carriers' (electrons or protons) energy spectrum, the carriers cannot be scattered very easily, and the absence of scattering leads to superconductivity.
The abrupt and large increase in electrical conductivity exhibited by some metals as the temperature approaches absolute zero.
Superconductivity, discovered in 1911 by Heike Kamerlingh Onnes, is a phenomenon occurring in certain materials at extremely low temperatures (on the order of negative 200 degrees Celsius), characterized by exactly zero electrical resistance and the exclusion of the interior magnetic field (the Meissner effect).