Pressure dependence of Ce valence in CeRhIn5

被引：1

作者：

Brubaker, Z. E. ^{[1
,2
]}

Stillwell, R. L. ^{[2
]}

Chow, P. ^{[3
]}

Xiao, Y. ^{[3
]}

Kenney-Benson, C. ^{[3
]}

Ferry, R. ^{[3
]}

Jenei, Z. ^{[4
]}

Zieve, R. J. ^{[1
]}

Jeffries, J. R. ^{[4
]}

机构：

[1] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

[2] Lawrence Livermore Natl Lab, Div Mat Sci, Livermore, CA 94550 USA

[3] Argonne Natl Lab, HPCAT, Geophys Lab, Carnegie Inst Washington, 9700 S Cass Ave, Argonne, IL 60439 USA

[4] Lawrence Livermore Natl Lab, Div Phys, Livermore, CA 94550 USA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2018年 / 30卷 / 03期

关键词：

heavy-fermion; superconductivity; x-ray spectroscopy; SUPERCONDUCTIVITY;

D O I：

10.1088/1361-648X/aa9e2b

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have studied the Ce valence as a function of pressure in CeRhIn5 at 300 K and at 22 K using x-ray absorption spectroscopy in partial fluorescent yield mode. At room temperature, we found no detectable change in Ce valence greater than 0.01 up to a pressure of 5.5 GPa. At 22 K, the valence remains robust against pressure below 6 GPa, in contrast to the predicted valence crossover at P = 2.35 GPa. This work yields an upper limit for the change in Ce-valence and suggests that the critical valence fluctuation scenario, in its current form, is unlikely.

引用

页数：4

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