Subgap Structures in Intrinsic Josephson Junctions of Tl2Ba2Ca2Cu3O10+ delta and Bi2Sr2CaCu2O8+ delta.
作者： K. Schlenga , G. Hechtfischer , R. Kleiner , W. Walkenhorst , P. Müller
DOI: 10.1103/PHYSREVLETT.76.4943
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摘要: We report on pronounced structures in the current-voltage characteristics of intrinsic Josephson junctions high- ${T}_{c}$ superconductors ${\mathrm{Tl}}_{2}{\mathrm{Ba}}_{2}{\mathrm{Ca}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{10+\ensuremath{\delta}}$ and ${\mathrm{Bi}}_{2}{\mathrm{Sr}}_{2}{\mathrm{CaCu}}_{2}{\mathrm{O}}_{8+\ensuremath{\delta}}$. The appear well below superconducting gap, independent sample geometry, magnetic field, temperature up to ${0.5T}_{c}$. discuss possible explanations show that could be explained by a single peak quasiparticle current, possibly arising from subgap structure density states. For superlattices has been predicted explain our results.
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