Spectroscopic analysis of finite size effects around a Kondo quantum dot

Details Spectroscopic analysis of finite size effects around a Kondo quantum dot Spectroscopic analysis of finite size effects around a Kondo quantum dot

2007-08-07

arxiv.org/abs/0708.0906v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

contribution to Les Houches proceeding, ``Quantum magnetism'' 2006

Scientific paper

We consider a simple setup in which a small quantum dot is strongly connected to a finite size box. This box can be either a metallic box or a finite size quantum wire.The formation of the Kondo screening cloud in the box strongly depends on the ratio between the Kondo temperature and the box level spacing. By weakly connecting two metallic reservoirs to the quantum dot, a detailed spectroscopic analysis can be performed. Since the transport channels and the screening channels are almost decoupled, such a setup allows an easier access to the measure of finite-size effects associated with the finite extension of the Kondo cloud.

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