Predominantly Superconducting Origin of Large Energy Gaps in UnderdopedBi2Sr2CaCu2O8+δfrom Tunneling Spectroscopy
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منابع مشابه
Predominantly Superconducting Origin of Large Energy Gaps in Underdoped Bi2Sr2CaCu2O8−δ from Tunneling Spectroscopy
New tunneling data are reported in underdoped Bi2Sr2CaCu2O8−δ using superconductor-insulator-superconductor break junctions. Energy gaps, ∆, of 51±2, 54±2 and 57±3 meV are observed for three crystals with Tc=77, 74, and 70 K respectively. These energy gaps are nearly three times larger than for overdoped crystals with similar Tc. Detailed examination of tunneling spectra over a wide doping rang...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1999
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.83.1018