Demonstration of all in situ magnesium diboride superconductor thin-film tunnel junctions

Tae Hee Kim, Jagadeesh S. Moodera

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

High-quality planar tunnel junctions of MgB 2 superconductor were investigated. The MgB 2 film surface quality and composition were determined by Auger electron spectroscopy. Two superconducting energy gaps due to the σ and π bands of MgB 2 were determined. Phonon structure were also observed during the tunneling process.

Original languageEnglish
Pages (from-to)434-436
Number of pages3
JournalApplied Physics Letters
Volume85
Issue number3
DOIs
StatePublished - 19 Jul 2004

Bibliographical note

Funding Information:
This research was supported by ONR Grant No. N00014-02-1-0119. The authors thank Dr. R. Meservey for his interest and valuable discussion. They acknowledge experimental assistance from P. LeClair, T. Santos, A. Thomas, and B. Satpati.

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