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Low temperature superconductors refer to materials with a critical temperature below 30 K, and are cooled mainly by liquid helium (T c > 4.2 K). One exception to this rule is the iron pnictide group of superconductors which display behaviour and properties typical of high-temperature superconductors, yet some of the group have critical ...
Though YPtBi is a relatively low temperature superconductor, this does suggest another approach to creating superconductors. [56] "Quantum bipolarons" could describe how a material might superconduct at up to nearly room temperature. [57]
The table below shows some of the parameters of common superconductors. X:Y means material X doped with element Y, T C is the highest reported transition temperature in kelvins and H C is a critical magnetic field in tesla. "BCS" means whether or not the superconductivity is explained within the BCS theory.
The Matthias rules are a set of guidelines to find low temperature superconductors but were never provided in list form by Matthias. A popular summarized version of these rules reads: [19] [20] [15] [8] High symmetry is good, cubic symmetry is the best. High density of electronic states is good. Stay away from oxygen. Stay away from magnetism
Room-temperature superconductors: those whose critical temperature is above 273 K. 77 K is used as the demarcation point to emphasize whether or not superconductivity in the materials can be achieved with liquid nitrogen (whose boiling point is 77K), which is much more feasible than liquid helium (an alternative to achieve the temperatures ...
An organic superconductor is a synthetic organic compound that exhibits superconductivity at low temperatures. As of 2007 the highest achieved critical temperature for an organic superconductor at standard pressure is 33 K (−240 °C; −400 °F), observed in the alkali-doped fullerene RbCs 2 C 60. [1] [2]
However, currently known high-temperature superconductors are brittle ceramics that are expensive to manufacture and not easily formed into wires or other useful shapes. [4] Therefore, the applications for HTS have been where it has some other intrinsic advantage, e.g. in: low thermal loss current leads for LTS devices (low thermal conductivity),
High-temperature superconductors (HTS) become superconducting at more easily obtainable liquid nitrogen temperatures, which is much more economical than liquid helium that is typically used in low-temperature superconductors. HTS are ceramics, and are fragile relative to conventional metal alloy superconductors such as niobium-titanium.