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arXiv · 1310.6750

Measuring the Kondo Cloud by Current Cross Correlations in Helical Liquids

Thore Posske·Björn Trauzettel
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Abstract

The Kondo cloud, represented by the correlations between the magnetic moment and the spin density in the leads of a Kondo setup, is until now eluding its observation. We exploit the unique coupling of spin and direction of motion of the recently discovered helical liquids in a setup with two leads to establish a proportionality between the Kondo cloud and the time resolved current cross correlations. This relation holds around a specific choice of model parameters. Thereby, we provide a new and direct way to detect the Kondo cloud.

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Thore Posske, Björn Trauzettel. 2013-10-24. Measuring the Kondo Cloud by Current Cross Correlations in Helical Liquids. https://doi.org/10.1103/physrevb.89.075108

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