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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Abstract

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
Volume87
Issue number17
Publication statusPublished - Oct 22 2001

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Tsuda, S., Yokoya, T., Kiss, T., Takano, Y., Togano, K., Kito, H., Ihara, H., & Shin, S. (2001). Evidence for a multiple superconducting gap in MgB2 from high-resolution photoemission spectroscopy. Physical Review Letters, 87(17), 1770061-1770064. [177006].