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arXiv 0704.0843cond-mat.str-el
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强耦合费米液体的Kadowaki-Woods比

Kadowaki-Woods Ratio of Strongly Coupled Fermi Liquids

Takuya Okabe

摘要:

在费米液体理论的基础上,对典型的巡游$d$和$f$电子系统,采用第一原理能带计算方法计算了Kadowaki-Woods比$A/γ^2$.如观察到的,发现$d$电子系统的比率显著小于正常$f$系统,即使不考虑它们相对弱的相关性。这一比值的差异是由于费米面的性质不同造成的。通过比较Pd和USn $_3$的典型情况,我们讨论了准粒子输运弛豫的费米面依赖性的重要性。

英文摘要:

On the basis of the Fermi liquid theory, the Kadowaki-Woods ratio $A/γ^2$ is evaluated by using a first principle band calculation for typical itinerant $d$ and $f$ electron systems. It is found as observed that the ratio for the $d$ electron systems is significantly smaller than the normal $f$ systems, even without considering their relatively weak correlation. The difference in the ratio value comes from different characters of the Fermi surfaces. By comparing Pd and USn$_3$ as typical cases, we discuss the importance of the Fermi surface dependence of the quasiparticle transport relaxation.

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