Andreev Conductance through a Quantum Dot Strongly Coupled to Ferromagnetic and Superconducting Leads

• Authors: K.P. Wójcik , I. Weymann
• Languages of publication: EN

Abstracts

EN

We analyze the Andreev conductance through a quantum dot strongly coupled to one ferromagnetic and one superconducting lead. The transmission due to the Andreev reflection is obtained from the numerical renormalization group method. We show that at low temperatures, depending on the dot level position, the Andreev conductance exhibits a peak at zero bias due to the Kondo effect, which can be split by the exchange field due to spin-dependent coupling to ferromagnetic lead.

Keywords

EN

73.23.-b; 72.15.Qm; 74.45.+c; 72.25.-b

Discipline

• 72.25.-b: Spin polarized transport(for spin polarized transport devices, see 85.75.-d)
• 73.23.-b: Electronic transport in mesoscopic systems
• 74.45.+c: Proximity effects; Andreev reflection; SN and SNS junctions
• 72.15.Qm: Scattering mechanisms and Kondo effect(see also 75.20.Hr Local moments in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions in magnetic properties and materials)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 132
• Issue: 1
• Pages: 143-145

Dates

published

2017-07

Contributors

author

K.P. Wójcik

• Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

I. Weymann

• Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.132.143