Quantum critical behavior in heavy-fermion superconductor CeIrIn5
S. Kambe, H. Sakai, Y. Tokunaga, R. E. Walstedt
DOI 10.1103/PhysRevB.82.144503 · Physical Review B
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Abstract
Based on analysis of nuclear (I115n) spin-lattice relaxation-time measurements on the heavy-fermion superconductor CeIrIn5, q⃗, ω, and temperature dependences of the dynamical susceptibility Im χ(q⃗,ωn) near the antiferromagnetic wave vector Q⃗ at low energy ωn∼10−4 meV have been estimated. The T dependences found, Im χ(Q⃗,ωn)∼T−3/2 and antiferromagnetic correlation length ξ∼T−3/4, are consistent with quantum critical behavior for a three-dimensional antiferromagnet (d=3, z=2) having a spin-density-wave instability.
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 | unknown |
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