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24 April 2024 |
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Article overview
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Tuning emergent magnetism in a Hund's impurity | A. A. Khajetoorians
; M. Valentyuk
; M. Steinbrecher
; T. Schlenk
; A. Shick
; J. Kolorenc
; A. I. Lichtenstein
; T. O. Wehling
; R. Wiesendanger
; J. Wiebe
; | Date: |
13 Apr 2016 | Abstract: | The recently proposed theoretical concept of a Hund’s metal is regarded as a
key to explain the exotic magnetic and electronic behavior occuring in the
strongly correlated electron systems of multiorbital metallic materials.
However, a tuning of the abundance of parameters, that determine these systems,
is experimentally challenging. Here, we investigate the smallest possible
realization of a Hund’s metal, a Hund’s impurity, realized by a single magnetic
impurity strongly hybridized to a metallic substrate. We experimentally control
all relevant parameters including magnetic anisotropy and hybridization by
hydrogenation with the tip of a scanning tunneling microscope and thereby tune
it through a regime from emergent magnetic moments into a multi-orbital Kondo
state. Our comparison of the measured temperature and magnetic field dependent
spectral functions to advanced many-body theories will give relevant input for
their application to non-Fermi liquid transport, complex magnetic order, or
unconventional superconductivity. | Source: | arXiv, 1604.3854 | Services: | Forum | Review | PDF | Favorites |
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