Coexistence of superconductivity and antiferromagnetism in CeRh1−xCoxIn5
V. S. Zapf, E. J. Freeman, E. D. Bauer, J. Petricka, C. Sirvent, N. A. Frederick, R. P. Dickey, M. B. Maple
DOI 10.1103/PhysRevB.65.014506 · Physical Review B
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Abstract
Single-crystal specimens of CeRh1−xCoxIn5 have been investigated by means of specific heat, electrical resistivity, and magnetic susceptibility measurements as a function of temperature. The measurements reveal the occurrence of superconductivity in compounds with 0.4<~x<~1.0 with superconducting transition temperatures between ∼1 and 2 K and antiferromagnetic order in compounds with 0.2<~x<~0.6 with Néel temperatures between ∼3 and 4 K. Superconductivity and antiferromagnetism appear to coexist for concentrations in the range 0.4<~x<~0.6. Specific-heat measurements indicate that the total entropy under the superconducting and antiferromagnetic transitions is comparable for the samples with 0<~x<~0.8, which implies that the same electrons are participating in the two phenomena. Measurements of the ac magnetic susceptibility revealed superconducting transitions in single-crystal specimens of CeRhIn5 at Tc=0.09 K, but the superconductivity was suppressed when the samples were powdered.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CeRh1-xCoxIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1 | Pressure unresolved | unknown |
| CeRhIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.09 | Pressure unresolved | onset |
| CeCoIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.3 | Pressure unresolved | unknown |
| CeIrIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.4 | Pressure unresolved | unknown |
| CeIn3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.2 | Pressure not reported | unknown |
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