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MgB2, a two-gap superconductor for practical applications

  • Superconductivity at 100—Where we’ve been and Where we’re Going
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Abstract

The history of superconductivity in MgB2 has been short, but intense. Ten years after its discovery, the two-gap mechanism of superconductivity in MgB2 has been mastered to a considerable extent while developing its superconducting properties in wires that meet the technical and economic requirements of industrial applications. The hope for dry superconductivity (i.e., without any liquid cryogen) using this simple and low-cost material has been recently fulfilled, with current commercial availability of MgB2-based dry MRI machines. We expect that scientific progress in understanding and developing MgB2 conductors will continue, strengthening the base for further deployment of MgB2 in applications. This article presents the main scientific and technical highlights of MgB2, describing its two-gap superconductivity, progress in improving its superconducting properties, the advances toward making MgB2 a fully recognized practical superconductor, and its prospects for ongoing and upcoming applications.

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Authors and Affiliations

  1. CNR-SPIN and Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, Genova, 16146, Italy

    Marina Putti

  2. Columbus Superconductors SpA, Via delle Terre Rosse 30, Genova, 16133, Italy

    Giovanni Grasso

Authors
  1. Marina Putti
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  2. Giovanni Grasso
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Correspondence to Marina Putti.

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Putti, M., Grasso, G. MgB2, a two-gap superconductor for practical applications. MRS Bulletin 36, 608–613 (2011). https://doi.org/10.1557/mrs.2011.176

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