Influence of pair coherence on charge tunneling through a quantum dot connected to a superconducting lead

2006/12/17 by T. Domański, T. Domanski A. Donabidowicz, A. Donabidowicz +2 · 4 citations
Engineering · Physics and Astronomy · #Molecular Junctions and Nanostructures #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.76.104514

published as Phys. Rev. B 76, 104514 (2007). · 7 pages, 9 figures

arxiv created 2006/12/17 · openalex publication_date 2007/09/19 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We analyze the charge transport through a single level quantum dot coupled to a normal and superconducting lead where the electron pairs exist either as the coherent (for temperatures below T_c) or incoherent objects (in a region T_c<T<T^*). Practically, this situation can be encountered using the high T_c superconducting materials where precursor effects have been observed upon approaching T_c from above. Without restricting to any particular microscopic mechanism, we investigate the qualitative properties of nonequilibrium charge current caused by the electron pair coherence.

Citations

• Low Temperature Transport through a Quantum Dot: The Anderson Model out of Equilibrium
• Landauer formula for the current through an interacting electron region
• The pseudogap in high-temperature superconductors: an experimental survey

Cited by

• Particle-hole mixing driven by the superconducting fluctuations
• Decoherence effect on Fano line shapes in double quantum dots coupled between normal and superconducting leads
• Spin-polarized Andreev transport influenced by Coulomb repulsion through a two-quantum-dot system
• Andreev transport through side-coupled double quantum dots