Effects of a magnetic cobalt STM tip on the electronic, magnetic, and spin-dependent transport properties of cobalt phthalocyanine junctions on a Co(111) substrate
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Abstract
The effect of a magnetic scanning tunneling microscopy (STM) tip on electronic, magnetic, and electronic transport properties through the molecular junction STM-tip-Co/CoPc/Co(111) was investigated by mean of electronic structure calculations. The spin transition was studied by varying the distance (passing from the tunneling regime to the contact regime) between the tip and the CoPc molecule in both parallel and antiparallel configurations. Our calculation shows that the transition of spin of the Co atom of a CoPc molecule has led to a change of the sign of the . It is also shown that the characteristic has been influenced by this spin transition of the central atom of the CoPc molecule. Published by the American Physical Society2025
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