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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology

» presentations   » 2011.10.24-28




Opto-electronically active magnetic molecules on metallic surfaces

C. Toher, J. Meyer, A. Nickel, F. Moresco, G. Cuniberti

Carbon-based Spintronics

2011.10.24-28; Dresden, Germany

Opto-electronically active organic molecules offer several advantages over traditional solidstate semiconductor materials in the fabrication of solar cells, including their low-cost, low weight, and flexibility. Here we present the results of ab initio density functional theory (DFT) and transport studies of molecules which combine two bodipy dye molecule cores with a central metal atom to produce a molecule which is both magnetic and opto-electronically active. Two different central metal atoms are used for comparison: a Zn atom which DFT calculations indicate produces a non-magnetic molecule; and a Co atom which produces a magnetic molecule. These molecules were deposited on a metallic surface for study using a scanning tunneling microscope (STM). DFT calculations indicate that the magnetic molecule with the central Co atom should maintain its spin-polarization on the metallic substrate, and the STM dI/dV spectrum also shows evidence of spin effects.



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