Influence of the oxygen content on the tunneling characteristics of YBa2Cu3O7-

A. M. Cucolo, R. Di Leo, P. Romano, Lynn Schneemeyer, J. V. Waszczak

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16 Citations (Scopus)

Abstract

We have formed planar tunnel junctions between Pb films and YBa2Cu3O7- single crystals with different surface oxygen stoichiometries. Oxygen losses have been induced by heating the crystals at 400°C in vacuum for different times. Low-leakage tunnel junctions have also been obtained in the case of the most degraded samples. As the oxygen deficiency increases, the Y-Ba-Cu-O gaplike structure gradually broadens and shifts towards higher energies. For thermally untreated samples, tunneling spectroscopy gives information on the local Tc.

Original languageEnglish
Pages (from-to)2857-2860
Number of pages4
JournalPhysical Review B
Volume44
Issue number6
DOIs
StatePublished - 1 Jan 1991

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tunnel junctions
hypoxia
oxygen
stoichiometry
leakage
vacuum
heating
shift
single crystals
spectroscopy
crystals
energy

Cite this

Cucolo, A. M. ; Di Leo, R. ; Romano, P. ; Schneemeyer, Lynn ; Waszczak, J. V. / Influence of the oxygen content on the tunneling characteristics of YBa2Cu3O7-. In: Physical Review B. 1991 ; Vol. 44, No. 6. pp. 2857-2860.
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Influence of the oxygen content on the tunneling characteristics of YBa2Cu3O7-. / Cucolo, A. M.; Di Leo, R.; Romano, P.; Schneemeyer, Lynn; Waszczak, J. V.

In: Physical Review B, Vol. 44, No. 6, 01.01.1991, p. 2857-2860.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Romano, P.

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AU - Waszczak, J. V.

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