Possible pairing mechanisms of PuCoGa5 superconductor
Yunkyu Bang, A. V. Balatsky, F. Wastin, J. D. Thompson
DOI 10.1103/PhysRevB.70.104512 · 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 examine possible pairing mechanisms of superconductivity in PuCoGa5 based on spin-fluctuations or phonons as mediating bosons. We consider experimental data of specific heat C(T) and resistivity ρ(T) as input to determine a consistent scattering boson with the superconducting transition temperature of 18.5K in PuCoGa5. Irrespective to the type of boson, the characteristic boson frequency is found to be ∼150K from the resistivity fitting. The spin fluctuation model is most consistent with the experimental resistivity, successfully explaining the anomalous temperature dependence [∼(T2∕150K+T)] at low temperatures as well as the saturation behavior at high temperatures. Assuming that the pairing state is a non s-wave, the large residual resistivity ρimp∼20μΩcm∼120K suggests that an ideally pure sample of PuCoGa5 would have a maximum Tc of 39K.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| PuCoGa5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 18.5 | Pressure not reported | unknown |
Similar papers
Tandem Pairing in Heavy-Fermion Superconductors
similarity 0.97Rebecca Flint & Piers Coleman
Source status unknown — claims are unverified
Specific heat and anisotropy of the nonconventional superconductors PuCoGa5 and PuRhGa5
similarity 0.96P. Javorský et al.
Source status unknown — claims are unverified
Unified character of correlation effects in unconventional Pu-based superconductors and δ-Pu
similarity 0.96A. B. Shick et al.
Source status unknown — claims are unverified
Possible mechanism of superconductivity in PuCoGa5 probed by self-irradiation damage
similarity 0.96F. Jutier et al.
Source status unknown — claims are unverified
Probing the Coulomb Interaction of the Unconventional Superconductor PuCoGa5 by Phonon Spectroscopy
similarity 0.96S. Raymond et al.
Source status unknown — claims are unverified
Electronic structure of the Pu-based superconductor PuCoGa5 and of related actinide-115 compounds
similarity 0.96I. Opahle et al.
Source status unknown — claims are unverified