Abstract
1-nm-size single organic molecules have attracted as a key material to realize ultra-small spintronic devices such as single molecular giant magnetoresistance memory. The origin of such unique magnetic properties is spin-polarization vector in the single molecules induced by contacting magnetic electrodes. Atomically-resolved spin-polarized STM has been used to measure quantitatively the spin polarization; however, in this study we point out that the reported method includes crucial ambiguity. A use of normalized (dI/dV)/T shows true spin polarization of the single molecules on magnetic domains.
