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arXiv · 0806.1852

Spin-Polarized STM for a Kondo adatom

A. C. Seridonio·F. M. Souza·I. A. Shelykh
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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.

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A. C. Seridonio, F. M. Souza, I. A. Shelykh. 2008-10-30. Spin-Polarized STM for a Kondo adatom. https://doi.org/10.1088/0953-8984%2F21%2F9%2F095003

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