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Single spins can be individually addressed when coupled to contacts forming an electrical junction. The chemical environment and local symmetry largely define the magnetic anisotropy. However, magnetic anisotropy also depends upon how the spin couples to the conduction electron bath via Kondo exchange.

Here, we utilize a highly corrugated hexagonal boron nitride monolayer to mediate the coupling between a spin and the metal contact. Our experiments demonstrate how the Kondo exchange interaction mimics chemical tailoring and changes the magnetic anisotropy.

P. Jacobson, T. Herden, M. Muenks, G. Laskin, O. Brovko, V. Stepanyuk, M. Ternes, and K. Kern
Quantum engineering of spin and anisotropy in magnetic molecular junctions
Nature Communications 6, 8536 (2015)

DOI: 10.1038/ncomm9536