Huard B, Anthore A, Birge Norman O, Pothier H, Esteve D
Quantronics Group, Service de Physique de l'Etat Condensé, DRECAM, CEA-Saclay, 91191 Gif-sur-Yvette, France.
Phys Rev Lett. 2005 Jul 15;95(3):036802. doi: 10.1103/PhysRevLett.95.036802.
In order to probe quantitatively the effect of Kondo impurities on energy exchange between electrons in metals, we have compared measurements on two silver wires with dilute magnetic impurities (manganese) introduced in one of them. The measurement of the temperature dependence of the electron phase coherence time on the wires provides an independent determination of the impurity concentration. Quantitative agreement on the energy exchange rate is found with a theory by Göppert et al. that accounts for Kondo scattering of electrons on spin-1/2 impurities.
为了定量探究近藤杂质对金属中电子间能量交换的影响，我们比较了对两根银线的测量结果，其中一根引入了稀磁杂质（锰）。对这些银线上电子相位相干时间的温度依赖性测量，能独立确定杂质浓度。在能量交换率方面，与戈佩特等人提出的一个理论达成了定量一致，该理论考虑了电子在自旋1/2杂质上的近藤散射。
