Crystal Field Effects in CeIrIn5

被引：3

作者：

Christianson, A. D. ^{[1
]}

Lawrence, J. M. ^{[1
]}

Riseborough, P. S. ^{[2
]}

Moreno, N. O. ^{[3
]}

Pagliuso, P. G. ^{[3
]}

Bauer, E. D. ^{[3
]}

Sarrao, J. L. ^{[3
]}

Bao, W. ^{[3
]}

Goremychkin, E. A. ^{[4
]}

Kern, S. ^{[5
]}

Trouw, F. R. ^{[3
]}

Hehlen, M. P. ^{[3
]}

机构：

[1] Univ Calif Irvine, Irvine, CA 92697 USA

[2] Temple Univ, Philadelphia, PA 19122 USA

[3] Los Alamos Natl Lab, MS K764, Los Alamos, NM 87545 USA

[4] Argonne Natl Lab, Argonne, IL 60439 USA

[5] Colorado State Univ, Ft Collins, CO 80523 USA

来源：

JOURNAL OF NEUTRON RESEARCH | 2005年 / 13卷 / 1-3期

关键词：

Inelastic neutron scattering; Heavy fermions; Kondo effect; Superconductivity; Crystal field splitting;

D O I：

10.1080/10238160412331299942

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

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 G(7) groundstate doublet and the first excited state doublet at 4 meV interwoven with a broad quasielastic contribution. The second region corresponds to the transition between the ground state and the second excited state doublet at 28 meV. The large Lorentzian half-widths of the peaks (similar to 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.

引用

页码：179 / 182

页数：4

共 11 条

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