Strong electron-electron correlation in the antiperovskite compound GaCNi3

被引：80
作者：
Tong, P. [1 ]
Sun, Y. P. [1 ]
Zhu, X. B. [1 ]
Song, W. H. [1 ]
机构：
[1] Chinese Acad Sci, Key Lab Mat Phys, Inst Solid State Phys, Hefei 230031, Peoples R China
来源：
PHYSICAL REVIEW B | 2006年 / 73卷 / 24期
关键词：
D O I：
10.1103/PhysRevB.73.245106
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report the structural, magnetic, electrical transport, and specific heat properties of polycrystalline GaCNi3 sample. The T-2 temperature dependence of resistivity and the large values of the Kadowaki-woods ratio A/gamma(2) (7.2 mu Omega cm/K-2) and the Wilson ratio (9.2) suggest a highly correlated Fermi liquid behavior in GaCNi3. Such a large electron-electron correlation is due to the proximity of ferromagnetic order from the side of exchange-enhanced Pauli paramagnet, accompanied by remarkable enhancements in the electronic specific heat coefficient gamma and the temperature independent magnetic susceptibility chi(0).
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页数：5
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