Anomalous low-temperature properties of dilute Ce alloys CexLa1-xCu2.2Si2 (x <= 0.2).
Anomalous low-temperature properties of dilute Ce alloys CexLa1-xCu2.2Si2 (x <= 0.2).
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稀Ce合金CexLa1-xCu2.2Si2 (x <= 0.2)的异常低温性能。
DOI：
10.1103/physrevb.49.3589
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Andraka
中科院分区：
文献类型：
--
作者：
Andraka
在1 ~ 20 K温度范围内，研究了中等稀释的Ce x La 1− x Cu 2.2 Si 2合金（x≤ 0.2）的比热、磁化率和电阻率。Ce0.1La0.9Cu2.2Si2的C/T和χ值均呈对数温度变化，表明存在双通道近藤效应.然而，磁场依赖性的C是不符合这样的解释。在低温下观察到的相关Ce 0.15 La 0.85 Cu 2.2 Si 2的异常自旋玻璃样行为表明该现象的磁性性质。
Specific heat, magnetic susceptibility, and electrical resistivity have been investigated for moderately dilute Ce x La 1− x Cu 2.2 Si 2 alloys (x≤ 0.2) between 1 and 20 K. Ce 0.1 La 0.9 Cu 2.2 Si 2 has been found to possess a logarithmic temperature variation in C/T and χ, implying a possibility of the two-channel Kondo effect. However, magnetic-field dependence of C is not consistent with such an interpretation. Anomalous spin-glass-like behavior observed for related Ce 0.15 La 0.85 Cu 2.2 Si 2 at low temperatures indicates a magnetic nature of the phenomenon.