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Question

Can superconductors exhibit resonance ? Why  or why not ?


Solution

Superconductors can exhibit resonance. It depends on the effect of a magnetic field on superconductivity and spin excitations. A magnetic field can suppress Tc and reduce the magnitude of the superconducting energy gap via either orbital pair breaking of Cooper pairs in the superconducting state Zeeman effect on electron spins.

Recently it has been discovered that a copper-oxide superconductor that exhibits zero resistance at one - and ONLY ONE temperature: 109 Kelvin. If confirmed, this would be the first compound to display a "resonant" superconductivity, where Cooper pairs form only at a specific temperature.

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