  We propose an orbital-selective model for the transport and magnetic
properties of the individual Co impurity deposited on the Pt(111). Using the
combination of the Anderson-type Hamiltonian and the Kubo's linear response
theory we show that the magnetization and dI/dV spectrum of Co adatom are
originated from the 3d states of the different symmetry. A textbook expression
for the spin-dependent differential conductance provides a natural connection
between magnetic and transport properties of Co/Pt(111). We found that it is
possible to detect and to manipulate the different 3d states of the Co adatom
by tuning the spin polarization of the tip and tip-impurity distance in STM
experiments.
