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Author Aminov, B. A. ♦ Hein, M. A. ♦ Mueller, G. ♦ Piel, H. ♦ Wehler, D. ♦ Kresin, V. Z. ♦ Ponomarev, Y. G. ♦ Buschmann, L. ♦ Winkeler, L. ♦ Guentherodt, G.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ HIGH-TC SUPERCONDUCTORS ♦ SUPERCONDUCTING JUNCTIONS ♦ ELECTRIC CONDUCTIVITY ♦ BISMUTH OXIDES ♦ STRONTIUM OXIDES ♦ CALCIUM OXIDES ♦ COPPER OXIDES ♦ TUNNEL EFFECT ♦ PROXIMITY EFFECT ♦ ENERGY GAP ♦ IV CHARACTERISTIC
Abstract A periodic structure has been observed in the tunneling characteristics of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{ital 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{close_quote}s proximity model characteristics. The observed effect indicates an important role of the proximity effect on surface sensitive properties of high-{ital T}{sub {ital c}} superconductors, and explains the reported discrepancy of energy-gap values for Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{ital x}}. {copyright} {ital 1996 The American Physical Society.}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-09-01
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 54
Issue Number 9


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