Charge transport in normal metal-magnesiumdiboride junctions

A. Brinkman, S. H.W. Van Der Ploeg, A. A. Golubov, H. Rogalla, T. H. Kim, J. S. Moodera

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11 Scopus citations

Abstract

The influence of the multiband nature of superconductivity in MgB 2 on the charge transport properties of MgB2 tunnel junctions and normal metal-MgB2 heterostructures has been theoretically modeled and experimentally explored. The conductance as function of barrier height and angle is calculated. Planar c-axis tunnel junctions are realized in which two gaps are resolved in the tunnel spectrum. For junctions with additional conductance in the direction of the crystallographic a-b plane we observe a sharp resonance that can possibly be attributed to a Leggett mode.

Original languageEnglish
Pages (from-to)407-411
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume67
Issue number1-3
DOIs
StatePublished - Jan 2006

Bibliographical note

Funding Information:
We gratefully acknowledge useful discussions with O.V. Dolgov, H. Hilgenkamp, M.Yu. Kupriyanov, D. van der Marel, and I. Mazin. This work is supported by the Netherlands Organization for Scientific Research (NWO) and the Dutch Foundation for Research on Maffer (FOM).

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