Crystal field effects in CeIrIn5

A. D. Christianson; J. M. Lawrence; P. S. Riseborough; N. O. Moreno; P. G. Pagliuso; E. D. Bauer; J. L. Sarrao; W. Bao; E. A. Goremychkin; S. Kern; F. R. Trouw; M. P. Hehlen

doi:10.1080/10238160412331299942

Crystal field effects in CeIrIn₅

A. D. Christianson, J. M. Lawrence, P. S. Riseborough, N. O. Moreno, P. G. Pagliuso, E. D. Bauer, J. L. Sarrao, W. Bao, E. A. Goremychkin, S. Kern, F. R. Trouw, M. P. Hehlen

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

3 Scopus citations

Abstract

In this work, we study crystalline electric field effects in the heavy fermion superconductor CeIrIn5. We observe two regions of broad magnetic response in the inelastic neutron scattering (INS) spectra at 10 K. The first corresponds to the transition between the Γ₇ groundstate doublet and the first excited state doublet at 4 meVinterwoven with a broad quasielastic contribution. The second region corresponds to the transition between the ground state and the second excited state doublet at 28meV. The large Lorentzian half-widths of the peaks (∼10 meV) calls into question calculations for the specific heat and magnetic susceptibility that assume sharp crystal field (CF) levels. Consequently, we have calculated the INS spectra and magnetic susceptibility using the Anderson impurity model within the non-crossing approximation including the effects of CF level splitting.

Original language	English
Pages (from-to)	179-182
Number of pages	4
Journal	Journal of Neutron Research
Volume	13
Issue number	1-3
DOIs	https://doi.org/10.1080/10238160412331299942
State	Published - 2005
Externally published	Yes

Keywords

Crystal field splitting
Heavy fermions
Inelastic neutron scattering
Kondo effect
Superconductivity

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This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1080/10238160412331299942

Cite this

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title = "Crystal field effects in CeIrIn5",

abstract = "In this work, we study crystalline electric field effects in the heavy fermion superconductor CeIrIn5. We observe two regions of broad magnetic response in the inelastic neutron scattering (INS) spectra at 10 K. The first corresponds to the transition between the Γ7 groundstate doublet and the first excited state doublet at 4 meVinterwoven with a broad quasielastic contribution. The second region corresponds to the transition between the ground state and the second excited state doublet at 28meV. The large Lorentzian half-widths of the peaks (∼10 meV) calls into question calculations for the specific heat and magnetic susceptibility that assume sharp crystal field (CF) levels. Consequently, we have calculated the INS spectra and magnetic susceptibility using the Anderson impurity model within the non-crossing approximation including the effects of CF level splitting.",

keywords = "Crystal field splitting, Heavy fermions, Inelastic neutron scattering, Kondo effect, Superconductivity",

author = "Christianson, {A. D.} and Lawrence, {J. M.} and Riseborough, {P. S.} and Moreno, {N. O.} and Pagliuso, {P. G.} and Bauer, {E. D.} and Sarrao, {J. L.} and W. Bao and Goremychkin, {E. A.} and S. Kern and Trouw, {F. R.} and Hehlen, {M. P.}",

year = "2005",

doi = "10.1080/10238160412331299942",

language = "English",

volume = "13",

pages = "179--182",

journal = "Journal of Neutron Research",

issn = "1023-8166",

publisher = "IOS Press",

number = "1-3",

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TY - JOUR

T1 - Crystal field effects in CeIrIn5

AU - Christianson, A. D.

AU - Lawrence, J. M.

AU - Riseborough, P. S.

AU - Moreno, N. O.

AU - Pagliuso, P. G.

AU - Bauer, E. D.

AU - Sarrao, J. L.

AU - Bao, W.

AU - Goremychkin, E. A.

AU - Kern, S.

AU - Trouw, F. R.

AU - Hehlen, M. P.

PY - 2005

Y1 - 2005

N2 - In this work, we study crystalline electric field effects in the heavy fermion superconductor CeIrIn5. We observe two regions of broad magnetic response in the inelastic neutron scattering (INS) spectra at 10 K. The first corresponds to the transition between the Γ7 groundstate doublet and the first excited state doublet at 4 meVinterwoven with a broad quasielastic contribution. The second region corresponds to the transition between the ground state and the second excited state doublet at 28meV. The large Lorentzian half-widths of the peaks (∼10 meV) calls into question calculations for the specific heat and magnetic susceptibility that assume sharp crystal field (CF) levels. Consequently, we have calculated the INS spectra and magnetic susceptibility using the Anderson impurity model within the non-crossing approximation including the effects of CF level splitting.

AB - In this work, we study crystalline electric field effects in the heavy fermion superconductor CeIrIn5. We observe two regions of broad magnetic response in the inelastic neutron scattering (INS) spectra at 10 K. The first corresponds to the transition between the Γ7 groundstate doublet and the first excited state doublet at 4 meVinterwoven with a broad quasielastic contribution. The second region corresponds to the transition between the ground state and the second excited state doublet at 28meV. The large Lorentzian half-widths of the peaks (∼10 meV) calls into question calculations for the specific heat and magnetic susceptibility that assume sharp crystal field (CF) levels. Consequently, we have calculated the INS spectra and magnetic susceptibility using the Anderson impurity model within the non-crossing approximation including the effects of CF level splitting.

KW - Crystal field splitting

KW - Heavy fermions

KW - Inelastic neutron scattering

KW - Kondo effect

KW - Superconductivity

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U2 - 10.1080/10238160412331299942

DO - 10.1080/10238160412331299942

M3 - Article

AN - SCOPUS:85013590478

SN - 1023-8166

VL - 13

SP - 179

EP - 182

JO - Journal of Neutron Research

JF - Journal of Neutron Research

IS - 1-3

ER -