Superconductivity in a Mixed-valent System: CeRu3Si2

Rauchschwalbe, U.; Lieke, W.; Steglich, F.; Godart, C.; Gupta, L. C.; Parks, R. D.

doi:10.1103/PhysRevB.30.444

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Superconductivity in a Mixed-valent System: CeRu₃Si₂

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Rauchschwalbe, U., Lieke, W., Steglich, F., Godart, C., Gupta, L. C., & Parks, R. D. (1984). Superconductivity in a Mixed-valent System: CeRu₃Si₂. Physical Review B, 30(1), 444-446. doi:10.1103/PhysRevB.30.444.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-C2B9-3

Abstract

Low-temperature properties characterize the hexagonal compound CeRu3Si2 as a mixed-valent system intermediate between weakly mixed-valent systems like CeSn3 or CePd3 and strongly mixed-valent systems like CeRu2. The dimensionless ratio of the Pauli susceptibility (χ0≃9.4×10−4 emu/mole) and the linear specific-heat coefficient (γ≃39 mJ/mole K2) is about 0.8. CeRu3Si2 exhibits type-II superconductivity below Tc≃1 K, which is much lower than Tc≃7 K of the La homolog.