Weak Localization and Magnetic Scattering in Dilute Magnetic Alloys

在这个更新提案中，他们将研究特殊系统中金属主体中的磁性杂质的性质，例如超薄膜和（几乎）绝缘的原子和团簇。此外，他们希望研究钯与正常金属（铜，镁）界面的顺子抑制，并探索自旋轨道散射与铁，钴和镍中d电子的磁性状态之间的联系。磁散射率的测量应扩展到亚mk温度范围。调查的主要工具将是弱定位。此外，他们希望将研究扩展到更高浓度的磁性杂质，这超出了弱局部化的应用范围。他们计划通过磁性杂质在正常电导下的散射截面来研究它们的非自旋翻转散射。他们还想利用超低电阻隧穿结来研究一些基本问题，例如无序二维电子系统中动态库仑相互作用的范围、RKKY相互作用等。

In this renewal proposal they will investigate the properties of magnetic impurities in metallic hosts for special systems, such as in ultra thin films and for (nearly) insulated atoms and clustors. Furthermore they wish to investigate the suppression of paramagnons at the interface of palladium with a normal metal (copper, magnesium), and to explore the connections between the spin-orbit scattering and the magnetic state of d-electrons in iron, cobalt and nickel. The measurements of the magnetic scattering rate shall be extended into the sub-mK temperature range. The main tool of investigation will be weak localization. In addition they want to extend the investigtion to higher concentrations of magnetic impurities which are beyond the application regime of weak localization. They plan to investigate the non-spin flip scattering of magnetic impurities by their scatteirng cross section in the normal conductance. They also want to use ultra-low resistance tunneling juctions to investigate basic questions, for example the range of the dynamic Coulomb interaction in disordered two dimensional electron systems, the RKKY interaction and others.