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

doi:10.1103/PhysRevB.34.4566

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 journal › Article › Academic › peer-review

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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 language	English
Pages (from-to)	4566-4570
Number of pages	5
Journal	Physical Review B
Volume	34
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.34.4566
Publication status	Published - 1 Jan 1986
Externally published	Yes

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

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.",

author = "Palstra, {T. T.M.} and G. Lu and Menovsky, {A. A.} and Nieuwenhuys, {G. J.} and Kes, {P. H.} and Mydosh, {J. A.}",

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T1 - Superconductivity in the ternary rare-earth (Y, La, and Lu) compounds RPd2Si2 and RRh2Si2

AU - Palstra, T. T.M.

AU - Lu, G.

AU - Menovsky, A. A.

AU - Nieuwenhuys, G. J.

AU - Kes, P. H.

AU - Mydosh, J. A.

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N2 - 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.

AB - 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.

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