Observation of a geometrical resonance effect in Bi2Sr2CaCu2O8+x break junctionsстатья
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Дата последнего поиска статьи во внешних источниках: 10 мая 2015 г.
Аннотация:A periodic structure has been observed in the tunneling characteristics of Bi2Sr2CaCu2O8+x break junctions. The observed structure is explained by the electron-hole interference effect in the surface layer, which produces a periodic structure in the tunneling characteristics. Good qualitative agreement has been obtained between measured data and calculated with Arnold's proximity model characteristics. The observed effect indicates an important role of the proximity effect on surface sensitive properties of high-Tc superconductors, and explains the reported discrepancy of energy-gap values for Bi2Sr2CaCu2O8+x.