Abstract
Combining single-molecule magnets (SMMs) and emergent two-dimensional substrates such as graphene may lead to device configurations that are promising for spintronics and quantum computing. However, to fully exploit the unique features of SMMs anchored to two-dimensional substrates, the choice of ligand attachments, which could affect the magnetic and electronic properties, is critical. In this work, we focus on hybrid junctions comprising CVD-grown graphene and [Mn12O12(O2CR)16(H2O)4](R=CH3,CHCl2) SMMs with different ligands. We find that [Mn12O12(O2CCH3)16(H2O)4] SMMs barely change the graphene’s conductivity, while [Mn12O12(O2CCHCl2)16(H2O)4] SMMs with more electronegative ligands, by means of charge transfer, remarkably modify the electronic transport in graphene as revealed by gate-voltage dependent magnetotransport measurements.
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