Basic similarities among cuprate, bismuthate, organic, Chevrel-phase, and heavy-fermion superconductors shown by penetration-depth measurements
Y. J. UemuraDepartment of Chemistry, Kyoto University, Kyoto 606, JapanL. P. LeMaterials Science Division, Argonne National Laboratory, Argonne, Illinois 60439G. M. LukeDepartment of Physics, Columbia University, New York City, New York 10027B. J. SternliebDepartment of Physics, University of California at San Diego, La Jolla, California 92093W. D. WuDepartment of Physics, Columbia University, New York City, New York 10027J. H. BrewerDepartment of Chemistry, Kyoto University, Kyoto 606, JapanT. M. RisemanTRIUMF and Department of Physics, University of British Columbia, Vancouver, British Columbia, Canada V6T 2A3C.L. SeamanDepartment of Chemistry, Kyoto University, Kyoto 606, JapanM. B. MapleMaterials Science Division, Argonne National Laboratory, Argonne, Illinois 60439M. IshikawaMaterials Science Division, Argonne National Laboratory, Argonne, Illinois 60439D. G. HinksMaterials Science Division, Argonne National Laboratory, Argonne, Illinois 60439J. D. JorgensenDepartment of Chemistry, Kyoto University, Kyoto 606, JapanG. SaitoDepartment of Physics, University of California at San Diego, La Jolla, California 92093Hideki YamochiDepartment of Physics, University of California at San Diego, La Jolla, California 92093
1991en
ABI
Аннотация
Muon-spin-relaxation and bulk measurements of the magnetic-field penetration depth suggest that the cuprate high-${\mathit{T}}_{\mathit{c}}$, bismuthate, organic Chevrel-phase, and heavy-fermion systems possibly belong to a unique group of superconductors characterized by high transition temperatures ${\mathit{T}}_{\mathit{c}}$ relative to the values of ${\mathit{n}}_{\mathit{s}}$/${\mathit{m}}^{\mathrm{*}}$ (carrier density/effective mass). This feature distinguishes these exotic superconductors from ordinary BCS superconductors.
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