Control of the Magnetic Interaction between Single-Molecule Magnet TbPc<sub>2</sub> and Superconductor NbSe<sub>2</sub> Surface by an Intercalated Co Atom.
basic_science · Level V
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- Record sourced from PubMed, PMID 37505070.
- Also identified by DOI 10.1021/acs.nanolett.3c01298.
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Abstract
We demonstrate that an intercalated Co atom in superconductor NbSe<sub>2</sub> could control the magnetic interaction between the adsorbed magnetic molecule of TbPc<sub>2</sub> and the NbSe<sub>2</sub> substrate. An intercalated Co atom enhances the magnetic interaction between the NbSe<sub>2</sub> and the TbPc<sub>2</sub> spin to cause Kondo resonance at the TbPc<sub>2</sub> position, a spin-singlet state formed by the itinerary electron. By applying a surface-normal magnetic field, we change the molecule's spin direction from the initial one directed to the Co atom to the surface normal. The change appears as a split Kondo resonance at the TbPc<sub>2</sub>, one of which is enhanced at the Tb site, which disappears when the outer magnetic field normal to the surface is applied and never appears, even if we return <i>B</i> to 0 T. The phenomenon suggests that the intercalated magnetic atoms can control the magnetic interaction between a magnetic molecule and the superconductor NbSe<sub>2</sub>.