Pairing symmetry in two distinct superconducting states of CeCu2Si2
M. Ishikawa, N. Takeda, M. Koeda, M. Hedo, Y. Uwatoko
DOI 10.1103/PhysRevB.68.024522 · Physical Review B
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 that the two distinct superconducting phases of CeCu2Si2 with a slightly different Tc revealed an opposite pressure dependence of Tc and quite a different normal state at low temperatures; a strongly T-dependent Cp/T peaking around 0.6 K for the high-Tc phase as contrasted with a very weak T dependence for the other. The superconducting Cp, however, exhibited a quadratic T dependence above 0.2 K and below ∼0.1K in both phases. We herein speculate that these two superconducting states might be due to a different pairing mechanism or symmetry.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.65 | Pressure not reported | midpoint |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.65 | Pressure not reported | midpoint |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.68 | Pressure not reported | midpoint |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.66 | Pressure not reported | midpoint |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.71 | Pressure not reported | midpoint |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.67 | Pressure not reported | midpoint |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.73 | Pressure not reported | midpoint |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.67 | Pressure not reported | midpoint |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.61 | Pressure not reported | midpoint |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.59 | Pressure not reported | midpoint |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.64 | Pressure not reported | midpoint |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.59 | Pressure not reported | midpoint |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.63 | Pressure not reported | midpoint |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.58 | Pressure not reported | midpoint |
Similar papers
Pressure-induced change of the pairing symmetry in superconducting CeCu2Si2
similarity 0.96E. Lengyel et al.
Source status unknown — claims are unverified
Emergent Loop-Nodal s±-Wave Superconductivity in CeCu2Si2: Similarities to the Iron-Based Superconductors
similarity 0.96Hiroaki Ikeda et al.
Source status unknown — claims are unverified
Heavy fermion superconductor CeCu2Si2 under high pressure: Multiprobing the valence crossover
similarity 0.96G. Seyfarth et al.
Source status unknown — claims are unverified
Pressure Tuning of the Interplay of Magnetism and Superconductivity in CeCu2Si2
similarity 0.96E. Lengyel et al.
Source status unknown — claims are unverified
Thermodynamic study of gap structure and pair-breaking effect by magnetic field in the heavy-fermion superconductor CeCu2Si2
similarity 0.96Shunichiro Kittaka et al.
Source status unknown — claims are unverified
Tunneling spectroscopy of the heavy-fermion superconductor CeCu2Si2
similarity 0.95I. Iguchi et al.
Source status unknown — claims are unverified