Evidence for a multiple superconducting gap in MgB2 from high-resolution photoemission spectroscopy

S. Tsuda, T. Yokoya, T. Kiss, Y. Takano, K. Togano, H. Kito, H. Ihara, S. Shin

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216 Citations (Scopus)


Multiple superconducting gap in MgB2 was studied using high-resolution photoemission spectroscopy. A coherent peak with a shoulder structure was observed in sharp contrast to that expected from a simple isotropic-gap opening in the superconducting spectrum measured at 5.4 K. Through temperature dependent study both the gaps were found to close at the bulk transition temperature.

Original languageEnglish
Article number177006
Pages (from-to)1770061-1770064
Number of pages4
JournalPhysical Review Letters
Issue number17
Publication statusPublished - Oct 22 2001
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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