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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 ...
Tunneling spectroscopy of Tl2Ba2CuO6
New results from tunneling spectroscopies on near optimally doped single crystals of Tl2Ba2CuO6 (Tl-2201) junctions are presented. The superconductor-insulator-normal metal (SIN) tunnel junctions are obtained using the ...