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Tunneling spectroscopy of heavily underdoped crystals of Bi2Sr2CaCu2O8-δ
Crystals of Bi2Sr2CaCu2O8+δ with optimal Tc=95 K have been underdoped using two different methods and the superconducting gaps have been obtained by tunneling. In some cases, three different tunneling geometries have been ...
Quasiparticle and Josephson tunneling of overdoped Bi2Sr2CaCu2O8+δ single crystals
(American Physical Society, 2000-02)
The point contact tunneling technique is used to examine quasiparticle and Josephson currents in overdoped Bi2Sr2CaCu2O8+δ (Bi-2212) single crystals with bulk Tc values ranging from 82 K down to 62 K. Superconductor-insu ...