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.

new version with improved discussion. added one figure. 12 pages (one-column) + 5 figures

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Cited by in corpus (11)

• Probing Magnetic Excitations and Correlations in Single and Coupled Spin Systems with Scanning Tunneling Spectroscopy
• The Spin-Polarization of the Split Kondo State
• Kondo resonance of a Co atom exchange coupled to a ferromagnetic tip
• Thermal dependence of the zero-bias conductance through a nanostructure
• Relation between width of the zero-bias anomaly and Kondo temperaure in transport measurements through correlated quantum dots: Effect of asymmetric coupling to the leads
• Fano-Kondo Spin Filter
• Spin-dependent beating patterns in thermoelectric properties: Filtering the carriers of the heat flux in a Kondo adatom system
• Quantum size effects in Pb layers with absorbed Kondo adatoms: Determination of the exchange coupling constant
• The graphene sheet versus the 2DEG: a relativistic Fano spin-filter via STM and AFM tips
• Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gas
• Dimensionality effects in the LDOS of ferromagnetic hosts probed via STM: spin-polarized quantum beats and spin filtering