“…We can see that the peak just below E F in the spin-down channel in Fig.2(a) is predominantly contributed by the d z 2 and d x 2 −y 2 orbitals, while the peak above E F originates mainly from the d z 2 , d yz , d xz , and d xy orbitals. Consequently, the d yz , d xz , and d xy orbitals are fully spin-polarized, each of them contributing 1 µ B to the M s , whereas the d z 2 orbital is partially spin-polarized, contributing 0.3 µ B to the M s , similar investigation has been used for exploring the origin of spin moments of TM atoms on metallic substrate [33]. In contrast, both the spin-up and spin-down peaks of the d x 2 −y 2 orbital are below E F , indicating that this orbital does not contribute to M s of Fe.…”