Temperature dependence of the low-energy crystal field excitation in PrOS4Sb12: effect of the energy gap
Temperature dependence of the low-energy crystal field excitation in PrOS4Sb12: effect of the energy gap
We have performed inelastic neutron scattering measurements of the singlet-triplet crystal-field (CF) excitation in the filled skutterudite compound PrOs4Sb12 in the vicinity of the superconducting transition. The CF linewidth decreases sharply below Tc. The decrease is consistent with an isotropic energy gap of 2?/kBTc=6.6±0.8, which is in good agreement with NQR measurements [H. Kotegawa et al., Phys. Rev. Lett. 90, (2003) 027001]. We observe additional scattering that may be due to low-energy vibrational (rattling) modes that may be relevant to the superconductivity.
crystal fields, neutron scattering, superconductivity
58-59
Goremychkin, E.A.
37f2b8ac-14dc-4957-9864-b490d9853451
Osborn, R.
12b613a4-baca-43c0-835f-9dc31a5e6a90
Rainford, B.D.
a57f1153-bbba-49a3-bffc-0d96087156a0
Bauer, E.D.
ba957e7a-39a6-43e7-8c9e-098ccd90b3df
Maple, M.B.
22b07b12-e462-4d16-ae9b-6d16da1b040e
Koza, M.
0328623f-2d1f-47c8-9cbc-d62c2bddef36
2006
Goremychkin, E.A.
37f2b8ac-14dc-4957-9864-b490d9853451
Osborn, R.
12b613a4-baca-43c0-835f-9dc31a5e6a90
Rainford, B.D.
a57f1153-bbba-49a3-bffc-0d96087156a0
Bauer, E.D.
ba957e7a-39a6-43e7-8c9e-098ccd90b3df
Maple, M.B.
22b07b12-e462-4d16-ae9b-6d16da1b040e
Koza, M.
0328623f-2d1f-47c8-9cbc-d62c2bddef36
Goremychkin, E.A., Osborn, R., Rainford, B.D., Bauer, E.D., Maple, M.B. and Koza, M.
(2006)
Temperature dependence of the low-energy crystal field excitation in PrOS4Sb12: effect of the energy gap.
Physica B: Condensed Matter, 378-380, .
(doi:10.1016/j.physb.2006.01.025).
Abstract
We have performed inelastic neutron scattering measurements of the singlet-triplet crystal-field (CF) excitation in the filled skutterudite compound PrOs4Sb12 in the vicinity of the superconducting transition. The CF linewidth decreases sharply below Tc. The decrease is consistent with an isotropic energy gap of 2?/kBTc=6.6±0.8, which is in good agreement with NQR measurements [H. Kotegawa et al., Phys. Rev. Lett. 90, (2003) 027001]. We observe additional scattering that may be due to low-energy vibrational (rattling) modes that may be relevant to the superconductivity.
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Published date: 2006
Keywords:
crystal fields, neutron scattering, superconductivity
Identifiers
Local EPrints ID: 57286
URI: http://eprints.soton.ac.uk/id/eprint/57286
ISSN: 0921-4526
PURE UUID: 5191747e-f9ac-4c89-a88a-49b2ef864017
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Date deposited: 13 Aug 2008
Last modified: 15 Mar 2024 11:06
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Contributors
Author:
E.A. Goremychkin
Author:
R. Osborn
Author:
B.D. Rainford
Author:
E.D. Bauer
Author:
M.B. Maple
Author:
M. Koza
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