Interplay between electron pairing and Dicke effect in triple quantum dot structures

We study the influence of the proximity-induced pairing on an electronic version of the Dicke effect in a heterostructure, comprising three quantum dots vertically coupled between the metallic and superconducting leads. We discuss a feasible experimental procedure for detecting the narrow/broad (sub...

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Bibliographic Details
Published in:Physical review. B 2017-03, Vol.95 (12), p.125419, Article 125419
Main Authors: Głodzik, S., Wójcik, K. P., Weymann, I., Domański, T.
Format: Article
Language:English
Subjects:
Electrons
Energy levels
Heterostructures
Quantum dots
Resistance
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Summary:We study the influence of the proximity-induced pairing on an electronic version of the Dicke effect in a heterostructure, comprising three quantum dots vertically coupled between the metallic and superconducting leads. We discuss a feasible experimental procedure for detecting the narrow/broad (subradiant/superradiant) contributions by means of the subgap Andreev spectroscopy. In the Kondo regime and for small energy level detuning the Dicke effect is manifested in the differential conductance.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.95.125419