Theory of Impurity Resistance in Metals
Theory of Impurity Resistance in Metals
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金属抗杂质理论
DOI：
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发表时间：
1960
期刊：
影响因子：
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通讯作者：
J. Langer
中科院分区：
文献类型：
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作者：
J. Langer
开发了一种多体技术，用于计算存在少量随机分散的固定杂质的费米流体的直流电阻率。某一类图产生电导率的表达式，其形式与标准经典传输系数类似；但衰减时间是由筛选杂质在费米表面上的单粒子类激发的散射决定的。整篇论文都采用了与场论中使用的传播器方法类似的传播器方法，并详细研究了该方法的微扰理论解释。
A many-body technique is developed for the calculation of the dc resistivity of a Fermi fluid in the presence of a few, randomly scattered, fixed, impurities. A certain class of graphs yields an expression for the conductivity which is similar in form to the standard classical transport coefficient; but the decay time is determined by the scattering of single-particle-like excitations at the Fermi surface by screened impurities. A propagator method similar to that used in field theory is employed throughout the paper, and the perturbation-theoretic interpretation of this method is examined in some detail.