Inelastic neutron scattering study of crystal field levels in Pr Os4 As12

Songxue Chi; Pengcheng Dai; T. Barnes; H. J. Kang; J. W. Lynn; R. Bewley; F. Ye; M. B. Maple; Z. Henkie; A. Pietraszko

doi:10.1103/PhysRevB.77.094428

Inelastic neutron scattering study of crystal field levels in Pr Os4 As12

Songxue Chi
, Pengcheng Dai
, T. Barnes
, H. J. Kang
, J. W. Lynn
, R. Bewley
, F. Ye
, M. B. Maple
, Z. Henkie
, A. Pietraszko

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We use neutron scattering to study the Pr3+ crystalline electric field (CEF) excitations in the filled skutterudite Pr Os4 As12. By comparing the observed levels and their strengths under neutron excitation with the theoretical spectrum and neutron excitation intensities, we identify the Pr3+ CEF levels and show that the ground state is a magnetic Γ4 (2) triplet, and the excited states Γ1, Γ4 (1), and Γ23 are at 0.4, 13, and 23 meV, respectively. A comparison of the observed CEF levels in Pr Os4 As12 with the heavy fermion superconductor Pr Os4 Sb12 reveals the microscopic origin of the differences in the ground states of these two filled skutterudites.

Original language	English
Article number	094428
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	77
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.77.094428
State	Published - Mar 25 2008

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10.1103/PhysRevB.77.094428

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title = "Inelastic neutron scattering study of crystal field levels in Pr Os4 As12",

abstract = "We use neutron scattering to study the Pr3+ crystalline electric field (CEF) excitations in the filled skutterudite Pr Os4 As12. By comparing the observed levels and their strengths under neutron excitation with the theoretical spectrum and neutron excitation intensities, we identify the Pr3+ CEF levels and show that the ground state is a magnetic Γ4 (2) triplet, and the excited states Γ1, Γ4 (1), and Γ23 are at 0.4, 13, and 23 meV, respectively. A comparison of the observed CEF levels in Pr Os4 As12 with the heavy fermion superconductor Pr Os4 Sb12 reveals the microscopic origin of the differences in the ground states of these two filled skutterudites.",

author = "Songxue Chi and Pengcheng Dai and T. Barnes and Kang, \{H. J.\} and Lynn, \{J. W.\} and R. Bewley and F. Ye and Maple, \{M. B.\} and Z. Henkie and A. Pietraszko",

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doi = "10.1103/PhysRevB.77.094428",

language = "English",

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issn = "1098-0121",

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TY - JOUR

T1 - Inelastic neutron scattering study of crystal field levels in Pr Os4 As12

AU - Chi, Songxue

AU - Dai, Pengcheng

AU - Barnes, T.

AU - Kang, H. J.

AU - Lynn, J. W.

AU - Bewley, R.

AU - Ye, F.

AU - Maple, M. B.

AU - Henkie, Z.

AU - Pietraszko, A.

PY - 2008/3/25

Y1 - 2008/3/25

N2 - We use neutron scattering to study the Pr3+ crystalline electric field (CEF) excitations in the filled skutterudite Pr Os4 As12. By comparing the observed levels and their strengths under neutron excitation with the theoretical spectrum and neutron excitation intensities, we identify the Pr3+ CEF levels and show that the ground state is a magnetic Γ4 (2) triplet, and the excited states Γ1, Γ4 (1), and Γ23 are at 0.4, 13, and 23 meV, respectively. A comparison of the observed CEF levels in Pr Os4 As12 with the heavy fermion superconductor Pr Os4 Sb12 reveals the microscopic origin of the differences in the ground states of these two filled skutterudites.

AB - We use neutron scattering to study the Pr3+ crystalline electric field (CEF) excitations in the filled skutterudite Pr Os4 As12. By comparing the observed levels and their strengths under neutron excitation with the theoretical spectrum and neutron excitation intensities, we identify the Pr3+ CEF levels and show that the ground state is a magnetic Γ4 (2) triplet, and the excited states Γ1, Γ4 (1), and Γ23 are at 0.4, 13, and 23 meV, respectively. A comparison of the observed CEF levels in Pr Os4 As12 with the heavy fermion superconductor Pr Os4 Sb12 reveals the microscopic origin of the differences in the ground states of these two filled skutterudites.

UR - https://www.scopus.com/pages/publications/41549090838

U2 - 10.1103/PhysRevB.77.094428

DO - 10.1103/PhysRevB.77.094428

M3 - Article

AN - SCOPUS:41549090838

SN - 1098-0121

VL - 77

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 9

M1 - 094428

ER -

Inelastic neutron scattering study of crystal field levels in Pr Os4 As12

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