Opto-electronically active magnetic molecules on metallic surfaces


Carbon-based Spintronics | event contribution
Oct. 24, 2011 - Oct. 28, 2011 | 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.


Authors

Opto-electronically active magnetic molecules on metallic surfaces


Carbon-based Spintronics | event contribution
Oct. 24, 2011 - Oct. 28, 2011 | 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.


Authors