The effect of high pressure on antiferromagnetic correlations in the Kondo semimetal CeNiSn

被引:9
|
作者
Sato, TJ
Kadowaki, H
Takabatake, T
Fujii, H
Isikawa, Y
机构
[1] UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 106,JAPAN
[2] HIROSHIMA UNIV,FAC INTEGRATED ARTS & SCI,HIGASHIHIROSHIMA 739,JAPAN
[3] TOYAMA UNIV,FAC SCI,TOYAMA 930,JAPAN
关键词
D O I
10.1088/0953-8984/8/43/014
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Magnetic excitation spectra of the Kondo semimetal CeNiSn have been studied by neutron scattering under hydrostatic pressure up to 11 kbar. The inelastic peak at <(h)over bar omega> = 4 meV has been observed at the ambient pressure below T-coh = 20 K and is regarded as a dynamic antiferromagnetic correlation. As pressure is applied, the 4 meV peak shifts to a higher-energy region and becomes weak. Since the pseudogap is known to be suppressed under high pressure, this result strongly suggests that the antiferromagnetic correlation is closely related to pseudogap formation.
引用
收藏
页码:8183 / 8189
页数:7
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