Unique Spin Dynamics and Unconventional Superconductivity in the Layered Heavy Fermion Compound CeIrIn5: NQR Evidence
G.-q. Zheng, K. Tanabe, T. Mito, S. Kawasaki, Y. Kitaoka, D. Aoki, Y. Haga, Y. Onuki
DOI 10.1103/PhysRevLett.86.4664 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We report measurements of the 115In nuclear spin-lattice relaxation rate ( 1/T1) between T=0.09 and 100 K in the new heavy fermion (HF) compound CeIrIn5. At 0.4≤T≤100K, 1/T1 is strongly T-dependent, which indicates that CeIrIn5 is much more itinerant than known Ce-based HFs. We find that 1/T1T, subtracting that for LaIrIn5, follows a (1T+θ)3/4 variation with θ=8K. We argue that this novel feature points to anisotropic, due to a layered crystal structure, spin fluctuations near a magnetic ordering. The bulk superconductivity sets in at 0.40 K below which the coherence peak is absent and 1/T1 follows a T3 variation, which suggests unconventional superconductivity with line-node gap.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CeIrIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.4 | Pressure unresolved | onset |
| CeIrIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.4 | Pressure unresolved | onset |
| CeIrIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.2 | Pressure unresolved | zero_resistance |
| CeRhIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.1 | 1.6 GPa | unknown |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.65 | Pressure unresolved | unknown |
Similar papers
Unconventional Superconductivity in CeIrIn5 and CeCoIn5: Specific Heat and Thermal Conductivity Studies
similarity 0.97R. Movshovich et al.
Source status unknown — claims are unverified
CeIrIn5: Superconductivity on a magnetic instability
similarity 0.96T. Shang et al.
Source status unknown — claims are unverified
Quantum critical behavior in heavy-fermion superconductor CeIrIn5
similarity 0.96S. Kambe et al.
Source status unknown — claims are unverified
Anisotropic Dependence of Superconductivity on Uniaxial Pressure in CeIrIn5
similarity 0.95O. M. Dix et al.
Source status unknown — claims are unverified
Superconducting gap structure of CeIrIn5 from field-angle-resolved measurements of its specific heat
similarity 0.95Shunichiro Kittaka et al.
Source status unknown — claims are unverified
Precursor State to Unconventional Superconductivity in CeIrIn5
similarity 0.95Sunil Nair et al.
Source status unknown — claims are unverified