Nodal superconductivity and non-Fermi-liquid behavior in Ce2PdIn8 studied by 115In nuclear quadrupole resonance
H. Fukazawa, R. Nagashima, S. Shimatani, Y. Kohori, D. Kaczorowski
DOI 10.1103/PhysRevB.86.094508 · Physical Review B
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Abstract
Nuclear quadrupole resonance measurements were performed on the heavy-fermion superconductor Ce2PdIn8. Above the Kondo coherence temperature Tcoh≃30 K, the spin-lattice relaxation rate 1/T1 is temperature independent, whereas at lower temperatures, down to the onset of superconductivity at Tc=0.64 K, it is nearly proportional to T1/2. Below Tc, 1/T1 shows no coherence peak and decreases as T3 down to 75 mK. All these findings indicate that Ce2PdIn8 is close to the antiferromagnetic quantum critical point, and the superconducting state has an unconventional character with line nodes in the superconducting gap.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ce2PdIn8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.64 | Pressure not reported | onset |
| CeCoIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.3 | Pressure not reported | unknown |
| CeIn3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| CeRhIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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