Superconductivity at 23 K in yttrium palladium boride carbide

R. J. Cava, H. Takagi, B. Batlogg, H. W. Zandbergen, J. J. Krajewski, W. F. Peck, R. B. Van Dover, R. J. Felder, T. Siegrist, K. Mizuhashi, J. O. Lee, H. Eisaki, S. A. Carter, S. Uchida

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Abstract

Copper oxide compounds have dominated superconductivity research since 1986 because of their very high transition temperatures (Tcs). In contrast, no new families of high-Tc intermetallic compounds have been discovered since the A15-type Nb3X compounds were first reported in 19531. The intermetallies with highest Jcs have all been based on niobium, with the highest Tcs being 20.7 K for bulk Nb3Ga and 23.2 K for sputtered films of Nb3Ge (refs 2, 3). Here we report the observation of superconductivity at 23 K in a multiple-phase bulk sample of a quaternary intermetallic, yttrium palladium boride carbide. This is higher than any Tc reported previously for a bulk intermetallic compound. Although the materials are not yet single-phase, the superconducting volume fraction is large. We propose that this compound may represent the first of a new family of superconducting intermetallics with relatively high T cs.

Original languageEnglish (US)
Pages (from-to)146-148
Number of pages3
JournalNature
Volume367
Issue number6459
DOIs
StatePublished - 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

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    Cava, R. J., Takagi, H., Batlogg, B., Zandbergen, H. W., Krajewski, J. J., Peck, W. F., Van Dover, R. B., Felder, R. J., Siegrist, T., Mizuhashi, K., Lee, J. O., Eisaki, H., Carter, S. A., & Uchida, S. (1994). Superconductivity at 23 K in yttrium palladium boride carbide. Nature, 367(6459), 146-148. https://doi.org/10.1038/367146a0