Superconductivity and non-Fermi-liquid behavior of La3Pd4Si4 and Ce3Pd4Si4
F. Kneidinger, H. Michor, E. Bauer, A. Gribanov, A. Lipatov, Y. Seropegin, J. Sereni, P. Rogl
DOI 10.1103/PhysRevB.88.024423 · Physical Review B
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Abstract
Measurements of temperature and field dependent bulk properties have been carried out on {Ce,La}3Pd4Si4. Rietveld refinements of x-ray powder intensity data confirm the orthorhombic U3Ni4Si4-type structure for both compounds. While La3Pd3Si4 exhibits superconductivity below 2 K together with some indications of a two gap scenario, the former can be characterized as a Kondo lattice system in presence of crystalline electric field splitting. Due to the closeness of a quantum critical point, distinct non-Fermi-liquid features dominate the low temperature physics of Ce3Pd4Si4.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La3Pd4Si4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2 | Pressure not reported | onset |
| La3Pd4Si4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.98 | Pressure not reported | midpoint |
| La3Pd4Si4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.15 | Pressure not reported | unknown |
| La3Pd4Ge4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.5 | Pressure not reported | unknown |
| La3Ni4Ge4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.76 | Pressure not reported | unknown |
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