Engineering electronically decoupled spin states is crucial for attaining strong spin by suppressing inelastic spin-flip scattering induced by conduction electrons. Accordingly, the fabrication of spins on insulating ultrathin movies corresponding to MgO or NaCl deposited on metallic substrates has been intensively investigated over the previous many years to mitigate digital hybridization. Nonetheless, these research have predominantly targeted on non-magnetic noble metallic substrates. On this work, we experimentally reveal that ultrathin MgO movies grown on a ferromagnetic Fe(001) substrate, generally employed in tunnel magnetoresistance sensors, can function a sophisticated platform for realizing electronically remoted spin states. As a prototypical system, we make the most of a copper (Cu) ion (S = 1/2) embedded inside a copper-phthalocyanine (CuPc) molecule. An atomically flat and clear insulating floor is obtained by optimizing the epitaxial development situations of ∼1 nm-thick MgO movies on an Fe(001) whisker substrate precoated with a p(1 × 1) oxygen layer. Scanning tunneling microscopy (STM) performed at 4.6 Okay underneath ultrahigh vacuum situations reveals particular person CuPc molecules adsorbed on the MgO floor. Simultaneous scanning tunneling spectroscopy (STS) reveals a well-defined molecular vitality hole. Remarkably, a pronounced zero-bias peak (ZBP) emerges inside this hole, signifying the presence of an electronically remoted spin on the MgO/Fe(001) heterostructure. Furthermore, STS measurements reveal the lateral extension of the ZBP throughout the insulating movie. These findings pave the best way for engineering remoted molecular spin states on ferromagnetic substrates, providing new potentialities for manipulating spin states by means of substrate-mediated magnetic interactions.
