Document Detail


Differential conductance and quantum interference in Kondo systems.
MedLine Citation:
PMID:  20482204     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
Jeremy Figgins; Dirk K Morr
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Publication Detail:
Type:  Journal Article     Date:  2010-05-06
Journal Detail:
Title:  Physical review letters     Volume:  104     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-20     Completed Date:  2010-09-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  187202     Citation Subset:  -    
Affiliation:
Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607, USA.
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