Inelastic neutron scattering studies of Crystal Field Levels in PrOs$_4$As$_{12}$

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dc.creatorChi, Songxue
dc.creatorDai, Pengcheng
dc.creatorBarnes, T.
dc.creatorKang, H. J.
dc.creatorLynn, J. W.
dc.creatorBewley, R.
dc.creatorYe, F.
dc.creatorMaple, M. B.
dc.creatorHenkie, Z.
dc.creatorPietraszko, A.
dc.date2008-02-19
dc.date.accessioned2026-07-07T10:11:54Z
dc.date.available2026-07-07T10:11:54Z
dc.descriptionWe use neutron scattering to study the Pr$^{3+}$ crystalline electric field (CEF) excitations in the filled skutterudite PrOs$_4$As$_{12}$. By comparing the observed levels and their strengths under neutron excitation with the theoretical spectrum and neutron excitation intensities, we identify the Pr$^{3+}$ CEF levels, and show that the ground state is a magnetic $Γ_4^{(2)}$ triplet, and the excited states $Γ_1$, $Γ_4^{(1)}$ and $Γ_{23}$ are at 0.4, 13 and 23 meV, respectively. A comparison of the observed CEF levels in PrOs$_4$As$_{12}$ with the heavy fermion superconductor PrOs$_4$Sb$_{12}$ reveals the microscopic origin of the differences in the ground states of these two filled skutterudites.
dc.description7 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0802.2539
dc.identifierhttp://arxiv.org/abs/0802.2539
dc.identifierPhys. Rev. B 77, 094428 (2008)
dc.identifierdoi:10.1103/PhysRevB.77.094428
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/172006
dc.subjectStrongly Correlated Electrons
dc.titleInelastic neutron scattering studies of Crystal Field Levels in PrOs$_4$As$_{12}$
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