Spin-polarized tunneling microscopy and the Kondo effect

Details Spin-polarized tunneling microscopy and the Kondo effect Spin-polarized tunneling microscopy and the Kondo effect

2007-03-30

arxiv.org/abs/cond-mat/0703813v1

Phys. Rev. B 76, 100408(R) (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.76.100408

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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