Electron transport and energy relaxation in dilute magnetic alloys
Electron transport and energy relaxation in dilute magnetic alloys
复制标题
稀磁合金中的电子输运和能量弛豫
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
A. Larkin
中科院分区：
文献类型：
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作者：
M. Vavilov;L. Glazman;A. Larkin;A. Larkin
我们考虑Ruderman-Kittel-Kasuya-Yosida~RKKY的效果！磁性杂质之间的相互作用对普通金属中电子弛豫率的影响。 RKKY 相互作用和近藤效应之间的相互作用可能导致电子动量弛豫率的非单调温度依赖性，这决定了德鲁德电导率。电子相位弛豫率决定了电阻率弱局域校正的幅度，也是温度的非单调函数。对于这个函数，我们发现其最大值的位置与磁性杂质浓度的依赖性。我们还将电子能量弛豫率与磁性杂质系统的激发光谱联系起来。能量弛豫决定了非平衡电子的分布函数。因此，电子分布函数的测量可以提供有关自旋玻璃相中的激发的信息。
We consider the effect of the Ruderman-Kittel-Kasuya-Yosida~RKKY! interaction between magnetic impurities on the electron relaxation rates in a normal metal. The interplay between the RKKY interaction and the Kondo effect may result in a nonmonotonic temperature dependence of the electron momentum relaxation rate, which determines the Drude conductivity. The electron phase relaxation rate, which determines the magnitude of the weak-localization correction to the resistivity, is also a nonmonotonic function of temperature. For this function, we find the dependence of the position of its maximum on the concentration of magnetic impurities. We also relate the electron energy relaxation rate to the excitation spectrum of the system of magnetic impurities. The energy relaxation determines the distribution function for the out-of-equilibrium electrons. Measurement of the electron distribution function thus may provide information about the excitations in the spin-glass phase.