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Crystal field potential of PrOs4Sb12: consequences for superconductivity

Crystal field potential of PrOs4Sb12: consequences for superconductivity
Crystal field potential of PrOs4Sb12: consequences for superconductivity
The results of inelastic neutron scattering provide a solution for the crystal field level scheme in PrOs4Sb12, in which the ground state in the cubic crystal field potential of T(h) symmetry is a Gamma(1) singlet. The conduction electron mass enhancement is consistent with inelastic exchange scattering, and we propose that inelastic quadrupolar, or aspherical Coulomb, scattering is responsible for enhancing the superconducting transition temperature. PrOs4Sb12 appears to be the first compound in which aspherical Coulomb scattering is strong enough to overcome magnetic pair breaking and increase T(c).
0031-9007
157003-[4pp]
Goremychkin, E.A.
37f2b8ac-14dc-4957-9864-b490d9853451
Osborn, R.
12b613a4-baca-43c0-835f-9dc31a5e6a90
Bauer, E.D.
ba957e7a-39a6-43e7-8c9e-098ccd90b3df
Maple, M.B.
22b07b12-e462-4d16-ae9b-6d16da1b040e
Frederick, N.A.
179c919a-5b53-461a-8808-b118ffc7e79c
Yuhasz, W.M.
4393ea89-e20e-4ad5-89f1-244e63bd7a50
Woodward, F.M.
c2ffbae0-e9cd-456e-a781-04ad0e0799a3
Lynn, J.W.
9475e90a-3d98-452f-90c5-090be55cba85
Goremychkin, E.A.
37f2b8ac-14dc-4957-9864-b490d9853451
Osborn, R.
12b613a4-baca-43c0-835f-9dc31a5e6a90
Bauer, E.D.
ba957e7a-39a6-43e7-8c9e-098ccd90b3df
Maple, M.B.
22b07b12-e462-4d16-ae9b-6d16da1b040e
Frederick, N.A.
179c919a-5b53-461a-8808-b118ffc7e79c
Yuhasz, W.M.
4393ea89-e20e-4ad5-89f1-244e63bd7a50
Woodward, F.M.
c2ffbae0-e9cd-456e-a781-04ad0e0799a3
Lynn, J.W.
9475e90a-3d98-452f-90c5-090be55cba85

Goremychkin, E.A., Osborn, R., Bauer, E.D., Maple, M.B., Frederick, N.A., Yuhasz, W.M., Woodward, F.M. and Lynn, J.W. (2004) Crystal field potential of PrOs4Sb12: consequences for superconductivity. Physical Review Letters, 93 (15), 157003-[4pp]. (doi:10.1103/PhysRevLett.93.157003).

Record type: Article

Abstract

The results of inelastic neutron scattering provide a solution for the crystal field level scheme in PrOs4Sb12, in which the ground state in the cubic crystal field potential of T(h) symmetry is a Gamma(1) singlet. The conduction electron mass enhancement is consistent with inelastic exchange scattering, and we propose that inelastic quadrupolar, or aspherical Coulomb, scattering is responsible for enhancing the superconducting transition temperature. PrOs4Sb12 appears to be the first compound in which aspherical Coulomb scattering is strong enough to overcome magnetic pair breaking and increase T(c).

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Submitted date: 21 April 2004
Published date: 8 October 2004

Identifiers

Local EPrints ID: 35542
URI: http://eprints.soton.ac.uk/id/eprint/35542
ISSN: 0031-9007
PURE UUID: bd870ab9-be1c-44cf-a829-276bc8a1fdc0

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Date deposited: 18 May 2006
Last modified: 11 Apr 2022 18:00

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Contributors

Author: E.A. Goremychkin
Author: R. Osborn
Author: E.D. Bauer
Author: M.B. Maple
Author: N.A. Frederick
Author: W.M. Yuhasz
Author: F.M. Woodward
Author: J.W. Lynn

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