Local structure and superconductivity of the Ce1−xLaxRu2 Laves phase system
N. L. Saini, S. Agrestini, E. Amato, M. Filippi, D. Di Castro, A. Bianconi, P. Manfrinetti, A. Palenzona, A. Marcelli
DOI 10.1103/PhysRevB.70.094509 · 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 have studied local structure of the Laves phase Ce1−xLaxRu2 superconductor by Ru K-edge extended x-ray absorption fine-structure measurements focusing on the small La concentration regime where the transition temperature Tc passes through a local maximum. We find that correlated Debye-Waller factor of the Ru-Ru bonds follows Tc with the varying La concentration in the system. Although, this remarkable Tc correlation on the local atomic structure suggests important role of the electron-lattice interactions, the band-structure effects seem more likely the reason to drive the anomalous superconducting behavior and the Tc maximum in this 4f system.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CeRu2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.2 | Pressure not reported | unknown |
| LaRu2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.4 | Pressure not reported | unknown |
| CeRu2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.5 | Pressure not reported | unknown |
| CeRu2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.17 | Pressure not reported | unknown |
| Ce0.97La0.03Ru2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.45 | Pressure not reported | unknown |
| Ce0.94La0.06Ru2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.55 | Pressure not reported | unknown |
| Ce0.91La0.09Ru2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.57 | Pressure not reported | unknown |
| Ce0.88La0.12Ru2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.14 | Pressure not reported | unknown |
| Ce0.85La0.15Ru2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.35 | Pressure not reported | unknown |
| Ce0.8La0.2Ru2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.77 | Pressure not reported | unknown |
| Ce0.25La0.75Ru2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.42 | Pressure not reported | unknown |
Similar papers
Superconductivity at 41 K and Its Competition with Spin-Density-Wave Instability in Layered CeO1−xFxFeAs
similarity 0.94G. F. Chen et al.
Source status unknown — claims are unverified
Photoemission study of an f-electron superconductor: CeRu2
similarity 0.94J.-S. Kang et al.
Source status unknown — claims are unverified
High-pressure phase of CeRu2: A magnetic superconductor with two charge states of Ru ions
similarity 0.93A. V. Tsvyashchenko et al.
Source status unknown — claims are unverified
Type-II superconductivity in a dilute magnetic system: La1−xTmxRu3Si2
similarity 0.93M. Escorne et al.
Source status unknown — claims are unverified
Electron energy bands and superconductivity of the intermetallics BaRh2 and LaRu2
similarity 0.93R. Asokamani et al.
Source status unknown — claims are unverified
Anomalous properties in the normal and superconducting states of LaRu3Si2
similarity 0.93Sheng Li et al.
Source status unknown — claims are unverified