Full counting statistics of the two-stage Kondo effect
We developed a theoretical framework which extends the method of full counting statistics (FCS) from conventional single-channel Kondo screening schemes to a multichannel Kondo paradigm. The developed idea of FCS has been demonstrated considering an example of a two-stage Kondo (2SK) model. We analy...
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Veröffentlicht in: | Physical review. B 2018-10, Vol.98 (16), p.165443, Article 165443 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We developed a theoretical framework which extends the method of full counting statistics (FCS) from conventional single-channel Kondo screening schemes to a multichannel Kondo paradigm. The developed idea of FCS has been demonstrated considering an example of a two-stage Kondo (2SK) model. We analyzed the charge-transferred statistics in the strong-coupling regime of a 2SK model using a nonequilibrium Keldysh formulation. A bounded value of the Fano factor, 1≤F≤5/3, confirmed the crossover regimes of charge-transferred statistics in the 2SK effect, from Poissonian to super-Poissonian. An innovative way of measuring the transport properties of the 2SK effect, by the independent measurements of charge current and noise, has been proposed. |
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ISSN: | 2469-9950 2469-9969 |
DOI: | 10.1103/PhysRevB.98.165443 |