Abstract
We investigate the bias dependence of the tunneling conductance between a spin-polarized(SP) scanning tunneling microscope (STM) tip and the surface conduction states of anormal metal with a Kondo adatom. Quantum interference between tip–host metal andtip–adatom–host metal conduction paths is studied in the full range of the Fano parameterq. The spin-polarized STM gives rise to a splitting of the Kondo peak and asymmetry in thezero-bias anomaly, depending on the lateral tip–adatom distance. For increasing lateraldistances, the Kondo peak splitting shows a strong suppression and the spin-polarizedconductance exhibits the standard Fano–Kondo profile.
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