Pomeranchuk量子临界附近非伽利略不变费米液体的电阻率
Resistivity of a non-Galilean--invariant Fermi Liquid near Pomeranchuk Quantum Criticality
摘要：
分析了金属在波梅兰丘克量子相变（QPT）附近电子-电子相互作用对电阻率的影响。我们表明，Umklapp过程是不有效的QPT附近，必须考虑相互作用和无序获得有限的和T依赖的电阻率。通过功率计数，在Z=3 QPT附近，在低T下对剩余电阻率的校正标度为Δ T ^{（D+2）/3}。然而，我们表明，A=0的简单连接，凸费米面在2D中，由于隐藏的可积性的电子运动。我们认为，在一个两带（s-d）模型中，A >0，并提出这个模型作为所观察到的T^{（D+2）/3}行为的解释。
英文摘要：
We analyze the effect of the electron-electron interaction on the resistivity of a metal near a Pomeranchuk quantum phase transition (QPT). We show that Umklapp processes are not effective near a QPT, and one must consider both interactions and disorder to obtain finite and T dependent resistivity. By power counting, the correction to the residual resistivity at low T scales as AT^{(D+2)/3} near a Z=3 QPT. We show, however, that A=0 for a simply connected, convex Fermi surface in 2D, due to hidden integrability of the electron motion. We argue that A >0 in a two-band (s-d) model and propose this model as an explanation for the observed T^{(D+2)/3} behavior.
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