Institute of Theoretical Physics, FU-Berlin, Arnimallee 14, D-14195 Berlin, Germany.
J Phys Condens Matter. 2010 Jun 23;22(24):243201. doi: 10.1088/0953-8984/22/24/243201. Epub 2010 Jun 2.
Characteristic results of magnetism in small particles, thin films and tunnel junctions are presented. As a consequence of the reduced atomic coordination in small clusters and thin films the electronic states and density of states are modified. Thus, magnetic moments and magnetization are affected. Generally, in clusters and thin films magnetic anisotropy plays a special role. In tunnel junctions the interplay of magnetism, spin currents and superconductivity are of particular interest. In ring-like mesoscopic systems Aharonov-Bohm-induced currents are studied. Results are given for single transition metal clusters, cluster ensembles, thin films, mesoscopic structures and tunnel systems.
介绍了小颗粒、薄膜和隧道结中磁性的特征结果。由于小团簇和薄膜中原子配位的减少，电子态和态密度发生了变化。因此，磁矩和磁化受到了影响。一般来说，在团簇和薄膜中，磁各向异性起着特殊的作用。在隧道结中，磁性、自旋电流和超导性的相互作用具有特别的意义。研究了环形介观系统中的 Aharonov-Bohm 诱导电流。给出了单个过渡金属团簇、团簇集合、薄膜、介观结构和隧道系统的结果。
