title: Spin-polarized STM for a Kondo adatom.
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 a normal metal with a Kondo adatom. Quantum interference between tip-host metal and tip-adatom-host metal conduction paths is studied in the full range of the Fano parameter q. The spin-polarized STM gives rise to a splitting of the Kondo peak and asymmetry in the zero-bias anomaly, depending on the lateral tip-adatom distance. For increasing lateral distances, the Kondo peak splitting shows a strong suppression and the spin-polarized conductance exhibits the standard Fano-Kondo profile.
authors.affiliation: ICCMP-International Center for Condensed Matter Physics, Universidade de Brasília, 04513 Brasília, DF, Brazil. Instituto de Física, Universidade Federal Fluminense, 24310-246, Niterói, RJ, Brazil.
authors.forename: A C
authors.initials: AC
authors.lastname: Seridonio
authors.forename: F M
authors.initials: FM
authors.lastname: Souza
authors.forename: I A
authors.initials: IA
authors.lastname: Shelykh