Heat-Capacity Measurements of Energy-Gap Nodes of the Heavy-Fermion Superconductor CeIrIn5 Deep inside the Pressure-Dependent Dome Structure of Its Superconducting Phase Diagram
Xin Lu, Hanoh Lee, T. Park, F. Ronning, E. D. Bauer, J. D. Thompson
DOI 10.1103/PhysRevLett.108.027001 · 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 use heat-capacity measurements as a function of field rotation to identify the nodal gap structure of CeIrIn5 at pressures to 2.05 GPa, deep inside its superconducting dome. A fourfold oscillation in the heat capacity at 0.3 K is observed for all pressures, but with its sign reversed between 1.50 and 0.90 GPa. On the basis of recent theoretical models for the field-angle-dependent specific heat, all data, including the sign reversal, imply a dx2−y2 order parameter with nodes along [110], which constrains theoretical models of the pairing mechanism in CeIrIn5.
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. | 1.2 | Pressure unresolved | onset |
| CeIrIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.5 | 0.9 GPa | onset |
| CeIrIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.75 | 1.5 GPa | onset |
| CeIrIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.85 | 2.05 GPa | onset |
| CeCoIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.3 | Pressure unresolved | onset |
Similar papers
Hybrid Gap Structure of the Heavy-Fermion Superconductor CeIrIn5
similarity 0.96H. Shakeripour et al.
Source status unknown — claims are unverified
Superconducting gap structure of CeIrIn5 from field-angle-resolved measurements of its specific heat
similarity 0.96Shunichiro Kittaka et al.
Source status unknown — claims are unverified
Enhancing the Superconducting Transition Temperature of the Heavy Fermion Compound CeIrIn5 in the Absence of Spin Correlations
similarity 0.95Shinji Kawasaki et al.
Source status unknown — claims are unverified
Microwave Conductivity and Penetration Depth in the Heavy Fermion Superconductor CeCoIn5
similarity 0.95Rodrigo J. Ormeno et al.
Source status unknown — claims are unverified
Evidence of d-wave pairing symmetry of the gap of the heavy-fermion superconductor CeIrIn5 from magnetic-penetration-depth measurements
similarity 0.95D. Vandervelde et al.
Source status unknown — claims are unverified
Universal heat conduction and nodal gap structure of the heavy-fermion superconductor CeIrIn5
similarity 0.95H. Shakeripour et al.
Source status unknown — claims are unverified