Ultrahigh-resolution photoemission spectroscopy of Ni borocarbides: direct observation of the superconducting gap and a change in gap anisotropy by impurity

T. Yokoya, T. Kiss, T. Watanabe, S. Shin, M. Nohara, H. Takagi, T. Oguchi

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The superconducting gaps (SGs) of YNi2B2C and Y(Ni0.8Pt0.2)2CB2C were studied using ultrahigh-resolution photoemission (PE) spectroscopy. A small but important difference in spectral shape was observed and attributed to the change in anisotropy of the SG between x=0.0 and 0.2 compounds.

Original languageEnglish
Pages (from-to)4952-4955
Number of pages4
JournalPhysical Review Letters
Issue number23
Publication statusPublished - Dec 4 2000
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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