Manipulating magnetism and conductance of an adatom-molecule junction on metal surfaces: ab initio study
arXiv:0804.3337 · doi:10.1103/PhysRevB.78.014426
Abstract
The state of the art ab initio calculations reveal the effect of a scanning tunnelling microscopy tip on magnetic properties and conductance of a benzene-adatom sandwich on Cu(001). We concentrate on a benzene-Co system interacting with a Cr tip. Our studies give a clear evidence that magnetism and conductance in molecule-adatom junctions can be tailored by the STM tip. Varying the tip-substrate distance the magnetic moment of the Co adatom can be switched on/off. The interplay between spin-polarized electron transport through the junction and its magnetic properties is demonstrated. A spin-filter effect in the junction is predicted.
arXiv comment4 pages, 3 figures
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