Electronic transport properties of the single-impurity Anderson model
Chen Ming-Lun(陈明伦)a) and Wang Shun-Jin(王顺金)a)b)
a Department of Physics, Sichuan University, Chengdu 610064, China; b Center of Theoretical Nuclear Physics of Heavy Ion Facilities of Lanzhou, Lanzhou 730000, China
Abstract We investigate the electronic transport properties of the single-impurity Anderson model. By employing the cluster expansions, the equations of motion of Green's functions are transformed into the corresponding equation of motion of connected Green's functions, which contains the correlation of two conduction electrons beyond the Lacroix approximation. With the method we show that the asymmetric line shape of zero bias conductance manifests itself as the Fano effect, and the Kondo effect is observed in the narrow peak of differential conductance curve of the system. The Fano and the Kondo effects can coexist in the single-impurity Anderson model when the impurity level is adjusted to an appropriate position.
Received: 25 September 2006
Revised: 12 January 2007
Accepted manuscript online:
PACS:
72.10.Fk
(Scattering by point defects, dislocations, surfaces, and other imperfections (including Kondo effect))
Fund: Project supported by the National Natural Science
Foundation of China (Grant Nos 10375039 and 90503008), the Doctoral
Fund of Ministry of Education of China, and the Center of
Theoretical Nuclear Physics of Heavy Ion Facilities of Lanzhou of
China.
Cite this article:
Chen Ming-Lun(陈明伦) and Wang Shun-Jin(王顺金) Electronic transport properties of the single-impurity Anderson model 2007 Chinese Physics 16 2096
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