Transport through Double-Dots coupled to normal and superconducting leads

2006/04/07 by Yoichi Tanaka, Norio Kawakami, Tanaka, Yoichi +1
Mathematics · Physics and Astronomy · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Quantum and electron transport phenomena #Spectral Theory in Mathematical Physics #Topological Materials and Phenomena

paper · pdf · doi:10.48550/arxiv.cond-mat/0604212

openalex publication_date 2006/04/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study transport through double quantum dots coupled to normal and superconducting leads, where the Andreev reflection plays a key role in determining characteristic transport properties. We shall discuss two typical cases, i.e. double dots with serial or parallel geometry. For the parallel geometry, the interference of electrons via multiple paths is induced, so that the transmission probability has Fano-type dip structures which are symmetric with respect to the Fermi energy. We also investigate the Aharonov-Bohm(AB) effect for the parallel geometry. In some particular situations, we find that the general AB period for double dots, 4π, is reduced to 2π.

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