Strongly correlated electron behaviour in the compound CeRhSn

Strongly correlated electron behaviour in the compound CeRhSn
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化合物 CeRhSn 中的强相关电子行为

DOI:
10.1080/13642810208218354
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发表时间:
2002
期刊:
Philosophical Magazine B
影响因子:
--
通讯作者:
J. W. Lynn
J. W. Lynn
中科院分区:
--
文献类型:
--
作者:
A. Ślebarski;M. Maple;E. J. Freeman;C. Sirvent;M. Radłowska;A. Jezierski;E. Granado;Q. Huang;J. W. Lynn

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对CeRhSn化合物进行了电阻率ρ、磁化率χ、比热C、X射线光电子能谱(XPS)、X射线衍射和中子衍射测量。测量结果表明,在1 K左右,电子比热系数γ = C(T)/T <$160 mJ mol−1 K−2增强,在低温下,非费米液体的温度依赖性ρ(T)α T 0.75和χ(T)α T −0.5。在高温下,物理性质表明近藤中间价行为。XPS测量结果与3.07的Ce价态一致。中子衍射测量揭示了在100 K附近的平面Ce-Rh和Ce-Ce键距的异常,这显然与CeRhSn中的Ce价不稳定性有关。
Abstract Electrical resistivity ρ, magnetic susceptibility χ, specific heat C, X-ray photoelectron spectroscopy (XPS) and X-ray and neutron diffraction measurements were made on the compound CeRhSn. The measurements reveal an enhancement of the electronic specific heat coefficient γ = C(T)/T ≈ 160 mJ mol−1 K−2 at about 1 K and non-Fermi-liquid-like temperature dependences ρ(T) α T 0.75 and χ(T) α T −0.5 at low temperatures. At high temperatures, the physical properties indicate Kondo-intermediate-valence behaviour. The XPS measurements are consistent with a Ce valence of 3.07. The neutron diffraction measurements reveal anomalies in the planar Ce-Rh and Ce-Ce bond distances in the vicinity of 100 K which are apparently associated with the Ce valence instability in CeRhSn.
重费米子化合物YbCu4Ni的量子临界现象
DOI: --
发表时间: 2022
期刊:
影响因子: --
作者:
Kotaro Osato;Takanori Taniguchi;Yoichi Ikeda;Yusuke Nambu;Jun Gouchi;Yoshiya Uwatoko;Dita Puspita Sari;Isao Watanabe;Akihiro Koda;and Masaki Fujita
通讯作者: and Masaki Fujita