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Spin-polarized tunneling microscopy and the Kondo effect

Kelly R. Patton·Stefan Kettemann·Andrey Zhuravlev·Alexander Lichtenstein
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Abstract

We present a theory for spin-polarized scanning tunneling microscopy (SP-STM) of a Kondo impurity on an unpolarized metallic substrate. The spin polarization of the SP-STM breaks the spin symmetry of the Kondo system, similar to an applied magnetic field, leading to a splitting of the Abrikosov-Suhl-Kondo resonance. The amount of splitting is controlled by the strength of the coupling between the impurity and the SP-STM tip and also the overall spin polarization of the SP-STM.

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Kelly R. Patton, Stefan Kettemann, Andrey Zhuravlev, Alexander Lichtenstein. 2007-03-30. Spin-polarized tunneling microscopy and the Kondo effect. https://doi.org/10.1103/physrevb.76.100408

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