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Updated: Apr 25, 2026

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene
Published on: July 3, 2015
Magnetic hardening induced by nonmagnetic organic molecules
Martin Callsen1, Vasile Caciuc1, Nikolai Kiselev1
1Peter Grünberg Institut (PGI-1) and Institute of Advanced Simulation (IAS-1), Forschungszentrum Jülich and JARA, 52425 Jülich, Germany.
Abstract:
We reveal for the first time through a theoretical first-principles study that the adsorption of a nonmagnetic π-conjugated organic molecule on a ferromagnetic surface locally increases the strength of the magnetic exchange interaction between the magnetic atoms binding directly to the molecule. This magnetic hardening effect leads to the creation of a local molecular mediated magnetic unit with a stable magnetization direction and an enhanced barrier for the magnetization switching as compared to the clean surface. Remarkably, such a hybrid organic-ferromagnetic system exhibits also a spin-filter functionality with sharp spin-split molecularlike electronic features at the molecular site.
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