Emerging local Kondo screening and spatial coherence in the heavy-fermion metal YbRh2Si2

S. Ernst, S. Kirchner, C. Krellner, C. Geibel, G. Zwicknagl, F. Steglich and S. Wirth ()
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S. Ernst: Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40
S. Kirchner: Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40
C. Krellner: Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40
C. Geibel: Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40
G. Zwicknagl: Institut für Mathematische Physik, TU Braunschweig, Mendelssohnstrasse 3
F. Steglich: Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40
S. Wirth: Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40

Nature, 2011, vol. 474, issue 7351, 362-366

Abstract: That Kondo moment Certain metallic alloys that have a combination of localized magnetic moments and mobile conduction electrons can form an exotic state of matter known as a Kondo lattice. At low temperatures, quantum interactions between these localized and extended states give rise to charge carriers that behave as if they are unusually massive — known as heavy fermions. Stefan Ernst and colleagues use scanning tunnelling microscopy to probe these quantum interactions and observe the emergence of heavy fermions in a generic Kondo lattice system.

Date: 2011
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DOI: 10.1038/nature10148

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