Engineering electronically decoupled spin states is crucial for reaching strong spin by suppressing inelastic spin-flip scattering induced by conduction electrons. Accordingly, the fabrication of spins on insulating ultrathin movies resembling 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 complicated 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) carried out at 4.6 Ok below ultrahigh vacuum situations exhibits particular person CuPc molecules adsorbed on the MgO floor. Simultaneous scanning tunneling spectroscopy (STS) reveals a well-defined molecular power 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 way in which for engineering remoted molecular spin states on ferromagnetic substrates, providing new prospects for manipulating spin states by substrate-mediated magnetic interactions.
This text is Open Entry
Please wait whereas we load your content material…
One thing went improper. Strive once more?