Superconductivity in the ternary rare-earth (Y, La, and Lu) compounds RPd2Si2 and RRh2Si2

T. T.M. Palstra*, G. Lu, A. A. Menovsky, G. J. Nieuwenhuys, P. H. Kes, J. A. Mydosh

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

38 Citations (Scopus)
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Abstract

We have investigated the superconducting and metallurgical properties of the ternary compounds RPd2Si2 and RRh2Si2 with R=Y, La, and Lu. All RPd2Si2 compounds and LaRh2Si2 were found to be type-I superconductors below 1 K. A detailed metallurgical analysis shows that segregation of second phases can easily mask the intrinsic (stoichiometric ratio 1:2:2) intermetallic-compound properties. Two sample-preparation techniques, viz., single crystals and off-stoichiometry, were utilized to establish where bulk superconductivity occurs. The type-I behavior of these compounds is explained with an analogous model as is used for the heavy-fermion superconductors CeCu2Si2 and URu2Si2.

Original languageEnglish
Pages (from-to)4566-4570
Number of pages5
JournalPhysical Review B
Volume34
Issue number7
DOIs
Publication statusPublished - 1 Jan 1986
Externally publishedYes

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