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Differential conductance and quantum interference in kondo systems

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Title: Differential conductance and quantum interference in kondo systems
Author(s): Figgins, Jeremy; Morr, Dirk K.
Subject(s): kondo systems differential conductance
Abstract: We present a large-N theory for the differential conductance, dI=dV, in Kondo systems measured via scanning tunneling spectroscopy. We demonstrate that quantum interference between tunneling processes into the conduction band and into the magnetic f-electron states is crucial in determining the experimental Fano line shape of dI=dV. This allows one to uniquely extract the Kondo coupling and the ratio of the tunneling amplitudes from the experimental dI=dV curve. Finally, we show that dI=dV directly reflects the strength of the antiferromagnetic interaction in Kondo lattice systems.
Issue Date: 2010-05-06
Publisher: American Physical Society
Citation Info: Figgins, J. & Morr, D. K. 2010. Differential conductance and quantum interference in Kondo systems. Physical Review Letters, 104(18): 187202. DOI: 10.1103/PhysRevLett.104.187202
Type: Article
Description: Post print version of article may differ from published version. The definitive version is available through American Physical Society at DOI: 10.1103/PhysRevLett.104.187202
ISSN: 1079-7114
Date Available in INDIGO: 2011-05-07

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