Influence of the crystal field potential on the superconducting properties of PrRu4Sb12
Influence of the crystal field potential on the superconducting properties of PrRu4Sb12
We have determined the crystal field potential of the superconductor PrRu4Sb12 (Tc ~ 0.9K) using inelastic neutron scattering. The ground state of the Pr+3 ions in Th point group symmetry is a Γ1 singlet with a Γ5 triplet at an energy of Δ ~ 5.6 meV. Comparison with recent results on the PrOs4Sb12 compound, where Tc ~ 1.85 K and Δ ~ 0.6 meV, supports the conjecture that inelastic quadrupolar fluctuations (or aspherical Coulomb scattering) are responsible for the strong enhancement of Tc. In PrRu4Sb12, the effect is reduced by the higher energy of the first excited level.
superconductivity, crystal fields, inelastic neutron scattering
983-985
Adroja, D.T.
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Park, J.G.
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Goremychkin, E.A.
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Takeda, N.
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Ishikawa, M.
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McEwen, K.A.
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Osborn, R.
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Hillier, A.D.
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Rainford, B.D.
a57f1153-bbba-49a3-bffc-0d96087156a0
30 April 2005
Adroja, D.T.
8eaa8fab-9acb-420b-af27-918d6fd01a70
Park, J.G.
1381c682-a091-4c2a-95a4-485caab29675
Goremychkin, E.A.
37f2b8ac-14dc-4957-9864-b490d9853451
Takeda, N.
864297da-1e9a-4431-a93a-ed78c9039e86
Ishikawa, M.
5a495860-4c0b-465e-bc46-6c2c5a040f7b
McEwen, K.A.
3cd58e32-354b-437c-89be-ec0c824d4f34
Osborn, R.
12b613a4-baca-43c0-835f-9dc31a5e6a90
Hillier, A.D.
89e88dd9-6b7a-4b1d-a399-99b5bc301e9a
Rainford, B.D.
a57f1153-bbba-49a3-bffc-0d96087156a0
Adroja, D.T., Park, J.G., Goremychkin, E.A., Takeda, N., Ishikawa, M., McEwen, K.A., Osborn, R., Hillier, A.D. and Rainford, B.D.
(2005)
Influence of the crystal field potential on the superconducting properties of PrRu4Sb12.
Physica B: Condensed Matter, 359-361, .
(doi:10.1016/j.physb.2005.01.286).
Abstract
We have determined the crystal field potential of the superconductor PrRu4Sb12 (Tc ~ 0.9K) using inelastic neutron scattering. The ground state of the Pr+3 ions in Th point group symmetry is a Γ1 singlet with a Γ5 triplet at an energy of Δ ~ 5.6 meV. Comparison with recent results on the PrOs4Sb12 compound, where Tc ~ 1.85 K and Δ ~ 0.6 meV, supports the conjecture that inelastic quadrupolar fluctuations (or aspherical Coulomb scattering) are responsible for the strong enhancement of Tc. In PrRu4Sb12, the effect is reduced by the higher energy of the first excited level.
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Published date: 30 April 2005
Keywords:
superconductivity, crystal fields, inelastic neutron scattering
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Local EPrints ID: 56951
URI: http://eprints.soton.ac.uk/id/eprint/56951
ISSN: 0921-4526
PURE UUID: 67f85255-1ca2-4ae8-8168-530ee2d27a20
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Date deposited: 13 Aug 2008
Last modified: 15 Mar 2024 11:04
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Contributors
Author:
D.T. Adroja
Author:
J.G. Park
Author:
E.A. Goremychkin
Author:
N. Takeda
Author:
M. Ishikawa
Author:
K.A. McEwen
Author:
R. Osborn
Author:
A.D. Hillier
Author:
B.D. Rainford
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