Quantum engineering of spin and anisotropy in magnetic molecular junctions.

摘要: Single molecule magnets and single spin centres can be individually addressed when coupled to contacts forming an electrical junction. To control engineer the magnetism of quantum devices, it is necessary quantify how structural chemical environment junction affects centre. Metrics such as coordination number or symmetry provide a simple method local environment, but neglect many-body interactions impurity contacts. Here, we utilize highly corrugated hexagonal boron nitride monolayer mediate coupling between cobalt in CoHx (x=1,2) complexes metal contact. While hydrogen controls total effective spin, corrugation smoothly tunes Kondo exchange interaction underlying metal. Using scanning tunnelling microscopy spectroscopy together with numerical simulations, quantitatively demonstrate mimics tailoring changes magnetic anisotropy.