There has been a lot of progress and development in the superconductivity (zero electrical resistance) front owing to its wide range of applications in MRI machines, particle accelerators, and low-loss power cables. However, its widespread use has been limited due to the extremely low temperatures required to maintain the superconducting state. Therefore, over the last decade, a lot of researchers have focused on achieving what is known as “high-temperature superconductivity” or superconductivity above liquid nitrogen temperature.
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Source: Phys.org