Superconductivity

Superconductivity is a phenomenon where certain materials exhibit zero electrical resistance and expulsion of magnetic fields when cooled below a characteristic critical temperature. This means that once a current is established in a superconducting circuit, it can flow indefinitely without energy loss. ### Key Features of Superconductivity: 1. **Zero Resistance**: When a material transitions into a superconducting state, its electrical resistance drops to zero. This allows for the perfect conduction of electricity.