Quantum confinement on nanoislands as a tool for tailoring exchange interaction: An ab initio study

被引：7
作者：
Brovko, O. O. [1 ]
Hergert, W. [2 ]
Stepanyuk, V. S. [1 ]
机构：
[1] Max Planck Inst Mikrostrukturphys, D-06120 Halle, Germany
[2] Univ Halle Wittenberg, Fachbereich Phys, D-06099 Halle, Germany
来源：
PHYSICAL REVIEW B | 2009年 / 79卷 / 20期
关键词：
ab initio calculations; adsorbed layers; exchange interactions (electron); nanostructured materials; paramagnetic materials; SCANNING TUNNELING SPECTROSCOPY; RANGE OSCILLATORY INTERACTION; 2-DIMENSIONAL ELECTRON-GAS; SURFACE-STATES; METAL; WAVES; SCATTERING; CU(111); DEFECTS; CORRALS;
D O I：
10.1103/PhysRevB.79.205426
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We explore the influence of the quantum confinement of surface electrons by nanoscale paramagnetic islands on the exchange interaction between single adatoms adsorbed on top of the structure. We demonstrate that it is possible to enhance, reduce, or even reverse the exchange coupling at various adatom-adatom separations by deliberate choice of the island's size.
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页数：5
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