Electronic structure and magnetism of monatomic one‐dimensional metal nanostructures on metal surfaces
Electronic structure and magnetism of monatomic one‐dimensional metal nanostructures on metal surfaces
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DOI：
10.1002/pssb.201046181
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发表时间：
2010-10
期刊：
影响因子：
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通讯作者：
P. Ignatiev;N. Negulyaev;L. Niebergall;H. Hashemi;W. Hergert;V. Stepanyuk
中科院分区：
文献类型：
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作者：
P. Ignatiev;N. Negulyaev;L. Niebergall;H. Hashemi;W. Hergert;V. Stepanyuk
我们报告了耦合到支持表面态的金属基底的一维（1D）单原子金属纳米结构的理论研究。这项工作的目的是展示此类系统中电子结构、磁性和相互作用的一般特征。我们从简单的有限单原子链开始。结果表明，在一维金属链中的电子限制可以在金属基底的投影带隙能量下观察到。在其他能量下，通过链态散射到金属基底中，限制被显着抑制。尽管这种散射降低了链中磁性原子之间的交换相互作用，但我们表明仍然有可能显着增强短链中的交换相互作用。本文解决的下一个问题与表面态与广告链和一维谐振器的相互作用有关。特别关注一维谐振器中的限制对其内部原子扩散和自组织可能产生的影响。最后，我们阐述了处理一维纳米结构磁化动力学的理论方法。
We report on theoretical studies of one‐dimensional (1D) monatomic metal nanostructures coupled to metal substrates, which support surface states. The aim of the work is to demonstrate general features of electronic structure, magnetic properties, and interactions in such systems. We start from simple finite monatomic chains. It is shown that electronic confinement in 1D metallic chains can be observed at energies of projected band gaps of a metallic substrate. At other energies the confinement is significantly suppressed by scattering of chain states into the metallic substrate. Although this scattering decreases the exchange interaction between magnetic atoms incorporated into the chain, we show that it is still possible to get a significant enhancement of the exchange interaction in short chains. The next problem addressed in the paper is related to the interaction of the surface state with ad‐chains and 1D resonators. Special attention is paid to a possible impact of confinement in 1D resonators on atomic diffusion and self‐organization inside them. Finally, we illustrate the theoretical approach for the treatment of magnetization dynamics in 1D nanostructures.