Mechanism for the Non-Fermi-Liquid Behavior in CeCu{sub 6{minus}{ital x}}Au{sub {ital x}}
Mechanism for the Non-Fermi-Liquid Behavior in CeCu{sub 6{minus}{ital x}}Au{sub {ital x}}
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DOI：
10.1103/physrevlett.79.159
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发表时间：
1997-01
影响因子：
8.6
通讯作者：
A. Rosch;A. Schröder;O. Stockert;H. Löhneysen
中科院分区：
文献类型：
--
作者：
A. Rosch;A. Schröder;O. Stockert;H. Löhneysen
我们对最近观察到的金属合金CeCu{sub 6{minus}x} Au{sub x}的非费米液体行为提出了一种解释：在x=0.1附近，比热C与Tln（T{sub 0}/T）成正比，电阻率在很宽的T范围内随温度T线性增加。这些功能遵循从一个模型，其中三维传导电子耦合到{ital 2}-维临界{ital铁磁}波动附近的量子临界点x{sub c}=0.1。这幅图是由有序相（x=0.2）中的中子散射数据激发的，并且与观察到的相图一致。{版权} {美国物理学会}
We propose an explanation for the recently observed non-Fermi-liquid behavior of metallic alloys CeCu{sub 6{minus}x} Au{sub x} : Near x=0.1 , the specific heat C is proportional to Tln(T{sub 0}/T) , and the resistivity increases linearly with temperature T over a wide range of T . These features follow from a model in which three-dimensional conduction electrons are coupled to {ital two}-dimensional critical {ital ferromagnetic} fluctuations near the quantum critical point x{sub c}=0.1 . This picture is motivated by the neutron scattering data in the ordered phase (x=0.2 ) and is consistent with the observed phase diagram. {copyright} {ital 1997} {ital The American Physical Society}