Basic similarities among cuprate, bismuthate, organic, Chevrel-phase, and heavy-fermion superconductors shown by penetration-depth measurements | Synapse
May 20, 1991
Basic similarities among cuprate, bismuthate, organic, Chevrel-phase, and heavy-fermion superconductors shown by penetration-depth measurements
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Abstract
Muon-spin-relaxation and bulk measurements of the magnetic-field penetration depth suggest that the cuprate high-T₂, bismuthate, organic Chevrel-phase, and heavy-fermion systems possibly belong to a unique group of superconductors characterized by high transition temperatures T₂ relative to the values of nₒ/m^* (carrier density/effective mass). This feature distinguishes these exotic superconductors from ordinary BCS superconductors.