Apr, 2005
Influence of the crystal field potential on the superconducting properties of PrRU(4)Sb(12)
PHYSICA B-CONDENSED MATTER
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- Volume
- 359
- Number
- First page
- 983
- Last page
- 985
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1016/j.physb.2005.01.286
- Publisher
- ELSEVIER SCIENCE BV
We have determined the crystal field potential of the superconductor PrRu(4)Sb(12) (T(c) similar to 0.9 K) using inelastic neutron scattering. The ground state of the Pr(+3) ions in T(h) point group symmetry is a Gamma(1) singlet with a Gamma(5) triplet at an energy of Delta similar to 5.6meV. Comparison with recent results on the PrOs(4)Sb(12) compound, where T(c) similar to 1.85 K and Delta similar to 0.6 meV, supports the conjecture that inelastic quadrupolar fluctuations (or aspherical Coulomb scattering) are responsible for the strong enhancement of T(c). In PrRu(4)Sb(12), the effect is reduced by the higher energy of the first excited level. (c) 2005 Elsevier B.V. All rights reserved.
- Link information
- ID information
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- DOI : 10.1016/j.physb.2005.01.286
- ISSN : 0921-4526
- Web of Science ID : WOS:000229654400310