Doping dependence of spin excitations and its correlations with high-temperature superconductivity in iron pnictides
Doping dependence of spin excitations and its correlations with high-temperature superconductivity in iron pnictides
In conventional Bardeen-Cooper-Schrieffer (BCS) superconductors, superconductivity occurs when electrons form coherent Cooper pairs below the superconducting transition temperature Tc. Although the kinetic energy of paired electrons increases in the superconducting state relative to the normal state, the reduction in the ion lattice energy is sufficient to give the superconducting condensation …