Unusual evolution of the conduction-electron state in CexLa1-xB6 from non-Fermi liquid to Fermi liquid

被引：16
作者：
Nakamura, S. [1 ]
Endo, M.
Yamamoto, H.
Isshiki, T.
Kimura, N.
Aoki, H.
Nojima, T.
Otani, S.
Kunii, S.
机构：
[1] Tohoku Univ, Ctr Low Temp Sci, Sendai, Miyagi 9808577, Japan
[2] Natl Inst Mat Sci, Adv Nanomat Lab, Ibaraki 3050044, Japan
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 23期
关键词：
D O I：
10.1103/PhysRevLett.97.237204
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report unusual evolution of the conduction-electron state in the localized f electron system CexLa1-xB6 from normal electron state to heavy Fermi liquid (FL) state through local FL and non-FL states with increasing Ce concentration and/or with increasing magnetic field. The effective mass of quasiparticle or the coefficient A of T-2 term of resistivity is found to increase divergently near the boundary between FL state and non-FL state. The features of the non-FL state are also different from those of the typical non-FL systems previously observed or theoretically predicted.
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