Spin-polarized tunneling microscopy and the Kondo effect

Kelly R. Patton; Stefan Kettemann; Andrey Zhuravlev; Alexander Lichtenstein

doi:10.1103/PhysRevB.76.100408

Spin-polarized tunneling microscopy and the Kondo effect

Kelly R. Patton, Stefan Kettemann, Andrey Zhuravlev, Alexander Lichtenstein

Biochemistry, Chemistry & Physics

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18 Scopus citations

Abstract

We present a theory for spin-polarized scanning tunneling microscopy (SPSTM) of a Kondo impurity on an unpolarized metallic substrate. The spin polarization of the SPSTM 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 SPSTM tip and also the overall spin polarization of the SPSTM.

Original language	English
Article number	100408
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	76
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.76.100408
State	Published - Sep 28 2007

Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.76.100408

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title = "Spin-polarized tunneling microscopy and the Kondo effect",

abstract = "We present a theory for spin-polarized scanning tunneling microscopy (SPSTM) of a Kondo impurity on an unpolarized metallic substrate. The spin polarization of the SPSTM 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 SPSTM tip and also the overall spin polarization of the SPSTM.",

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AB - We present a theory for spin-polarized scanning tunneling microscopy (SPSTM) of a Kondo impurity on an unpolarized metallic substrate. The spin polarization of the SPSTM 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 SPSTM tip and also the overall spin polarization of the SPSTM.

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Spin-polarized tunneling microscopy and the Kondo effect

Abstract

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