Spin-polarized Andreev transport influenced by Coulomb repulsion through a two-quantum-dot system

2014/06/13 by Piotr Trocha, J. Barnaś, Józef Barnaś
Engineering · Physics and Astronomy · #Andreev reflection #Condensed matter physics #Coulomb #Electron #Ferromagnetism #Molecular Junctions and Nanostructures #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Quantum tunnelling #Spin (aerodynamics) #Superconductivity #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.89.245418

published as Phys. Rev. B 89, 245418 (2014) · 11 pages, 11 figures

openalex publication_date 2014/06/13 · arxiv created 2014/09/14 · arxiv updated 2014/09/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Spin-polarized transport through a double quantum dot system attached to a common superconducting lead and two ferromagnetic electrodes (fork geometry) is investigated theoretically. The key objective of the analysis is to describe the influence of electrodes' ferromagnetism on the Andreev tunneling. Both direct and crossed Andreev tunneling processes are considered, in general. The other objective is a detailed analysis of the role of Coulomb interaction and its impact on the Andreev tunneling processes.

Citations

• Ferromagnetic Proximity Effect in a Ferromagnet–Quantum-Dot–Superconductor Device
• Quasi-Particles and Gauge Invariance in the Theory of Superconductivity
• Contact resistance dependence of crossed Andreev reflection
• Real-time diagrammatic approach to transport through interacting quantum dots with normal and superconducting leads
• Resonant Andreev Tunneling in Strongly Interacting Quantum Dots
• Self-consistent theory of superconducting mesoscopic weak links
• Nonlocal Andreev transport through an interacting quantum dot
• Experimental Observation of Bias-Dependent Nonlocal Andreev Reflection
• Influence of pair coherence on charge tunneling through a quantum dot connected to a superconducting lead
• Evidence for Crossed Andreev Reflection in Superconductor-Ferromagnet Hybrid Structures