Abstract

MgB 2 tunnel junctions (MgB 2/barrier/MgB 2) were fabricated using a native oxide grown on the bottom MgB 2 film as the tunnel barrier. Such barriers therefore survive the deposition of the second electrode at 300°C, even over junction areas of ∼1 mm 2. Studies of such junctions and those of the type MgB 2/native or thermal oxide/metal (Pb, Au, or Ag) show that tunnel barriers grown on MgB 2 exhibit a wide range of barrier heights and widths.

Original languageEnglish (US)
Article number042512
JournalApplied Physics Letters
Volume89
Issue number4
DOIs
StatePublished - 2006

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tunnel junctions
oxides
tunnels
metal oxides
electrodes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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MgB 2 tunnel junctions with native or thermal oxide barriers. / Singh, Rakesh; Gandikota, R.; Kim, J.; Newman, Nathan; Rowell, J. M.

In: Applied Physics Letters, Vol. 89, No. 4, 042512, 2006.

Research output: Contribution to journalArticle

Singh, Rakesh ; Gandikota, R. ; Kim, J. ; Newman, Nathan ; Rowell, J. M. / MgB 2 tunnel junctions with native or thermal oxide barriers. In: Applied Physics Letters. 2006 ; Vol. 89, No. 4.
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