Critical electron scattering in UGe2 near the magnetic phase transition induced by pressure
Critical electron scattering in UGe2 near the magnetic phase transition induced by pressure
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UGe2 中压力引起的磁相变附近的临界电子散射
DOI：
10.1016/s0925-8388(98)00122-4
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发表时间：
1998
影响因子：
6.2
通讯作者：
Y. Ōnuki
中科院分区：
文献类型：
--
作者：
G. Oomi;T. Kagayama;Y. Ōnuki
测量了单晶铁磁uge2在高达2GPa高压下的电阻率。结果表明，合金的居里温度随压力的增加而降低，铁磁性在高压下消失。根据自旋涨落理论，分析了随温度变化的电阻率。在低温下观察到t2项，在临界压力附近系数出现发散。ρ(T)曲线呈t5 /3的相关关系，并对其压力效应进行了简要讨论。
The electrical resistivity of single crystalline ferromagnetic UGe2has been measured under high pressure up to 2GPa. It is found that the Curie temperature TCdecreases with increasing pressure and the ferromagnetism disappears at high pressure. The temperature dependent electrical resistivity is analyzed on the basis of spin fluctuation theory. The T2term was observed at low temperature and the coefficient shows a divergence near the critical pressure. A T5/3dependence in the ρ(T) curve was observed below and above TCand its pressure effect is discussed briefly.