Quantitative connection between the nanoscale electronic inhomogeneity and the pseudogap of Bi2Sr2CaCu2O8+δ superconductors
作者： Tatsuya Honma , Pei Herng Hor
DOI: 10.1016/J.PHYSC.2014.12.003
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摘要: Abstract We have found a quantitative connection between the evolution of inhomogeneous nanoscale electronic gaps (INSEG) state detected in Bi2Sr2CaCu2 O 8 + δ by scanning tunneling microscopy/spectroscopy (STM/S) and two universal, upper lower, pseudogaps high-temperature cuprate superconductors (HTCS). When doping temperature dependent INSEG map were analyzed using our proposed hole-scale, we find that are connected to specific coverages CuO2 plane INSEG: 50% 100% planes correspond lower pseudogaps, respectively. This indicates origin measured pseudogap energies temperatures intimately related geometrical coverage state. superconductivity coexist underdoped overdoped regimes. suggest states microscopically is necessary condition for high- T c superconductivity.
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