STM probing of local oscillations of the Fano-Kondo effect: a Doniach-Sunjic approach for the Kondo peak

A. C. Seridonio; L.N. Oliveira; M. Yoshida

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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

STM probing of local oscillations of the Fano-Kondo effect: a Doniach-Sunjic approach for the Kondo peak

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Author(s):	A. C. Seridonio ; L.N. Oliveira ^[2] ; M. Yoshida ^[3] Total Authors: 3
Document type:	Journal article
Source:	Brazilian Journal of Physics; v. 39, p. 226-229, 2009-04-00.
Abstract
The use of the scanning tunneling microscope (STM) for the investigation of Kondo adatoms on normal metallic surfaces reveals a Fano-Kondo behavior of the conductance as a function of the tip bias. In this work, the Doniach-Sunjic expression is used to describe the Kondo peak and we analyze the effect of a complex Fano phase, arising from an external magnetic field, on the conductance pattern. It is demonstrated that such phase generates local oscillations of the Fano-Kondo line shape and can lead to the suppression of anti-resonances. (AU)

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