Interaction between Kondo States and the Hall Effect of Dense Kondo System CexLa1-xB6
Interaction between Kondo States and the Hall Effect of Dense Kondo System CexLa1-xB6
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近藤态之间的相互作用与密集近藤系统 CexLa1-xB6 的霍尔效应
DOI：
10.1143/jpsj.54.1923
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发表时间：
1985
影响因子：
1.7
通讯作者：
T. Kasuya
中科院分区：
文献类型：
--
作者：
N. Sato;A. Sumiyama;S. Kunii;H. Nagano;T. Kasuya
测量了Ce x La 1- x B（0.0 3 μ m x 1）单晶样品的电阻率（37 mK T 780 K）、磁电阻率（H 10 0 kOe）和霍尔电阻率（H 15 0 kOe，4.2 K T 753 K）。在很低的温度下，电阻率的T2定律得到证实。即使对于磁有序的CeB 6，也发现A /γ 2 =α的普遍性。剩余电阻率的浓度依赖性表明，近藤态之间的相互作用效应出现急剧x =0.1附近。当x <0.1时，相互作用很弱，当x <0.1时，相互作用变化不大。霍尔电阻率在150 kOe以下与磁场成正比，在4.2K以下与温度无关。计算了近藤温度的真实的值。
Measurements of electrical resistivity (37 mK\({\leqq}T{\lesssim}780\) K for CeB 6 ), magnetoresistivity (\(H{\lesssim}100\) kOe) and Hall resistivity (\(H{\lesssim}150\) kOe, 4.2K≦ T ≦53 K) have been done for single crystalline samples of Ce x La 1- x B 6 (0.03≦ x ≦1). At very low temperatures, the T 2 law of resistivity is confirmed. A kind of universality for A /γ 2 =α is found even for magnetically ordered CeB 6 . The concentration dependence of residual resistivity shows that an interaction effect between Kondo states appears sharply around x =0.1. The interaction is weak for x <0.1 and does not vary so much for 0.1≦ x <1. The Hall resistivity is proportional to magnetic field up to 150 kOe and is independent of the temperature down to 4.2 K. The real value of the Kondo temperature is evaluated.