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Updated: Feb 8, 2026
11:16
Correlative Light- and Electron Microscopy Using Quantum Dot Nanoparticles
Published on: August 7, 2016
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Cross-correlations in a quantum dot Cooper pair splitter with ferromagnetic leads
Piotr Trocha1, Kacper Wrześniewski1
1Faculty of Physics, Adam Mickiewicz University, 61-614 Poznań, Poland.
Summary
We studied Andreev transport in quantum dots using ferromagnetic leads. Ferromagnetic leads can lead to positive current cross-correlations, unlike non-magnetic electrodes.
Area of Science:
- Condensed matter physics
- Quantum transport phenomena
Background:
- Quantum dots are crucial in nanoscale electronics.
- Andreev transport involves superconducting and normal interfaces.
- Ferromagnetic leads introduce spin-dependent effects.
Purpose of the Study:
- Investigate Andreev transport through a quantum dot.
- Analyze current cross-correlations with ferromagnetic leads.
- Understand mechanisms affecting transport properties.
Main Methods:
- Real-time diagrammatic technique.
- Sequential tunneling regime analysis.
- Calculation of current cross-correlations.
Main Results:
- Current cross-correlations depend on model parameters.
- Observed enhancement, suppression, and sign changes in correlations.
- Splitting of Cooper pairs can yield uncorrelated electrons.
- Ferromagnetic leads can result in positive current cross-correlations.
Conclusions:
- Ferromagnetic leads offer tunable control over Andreev transport.
- Current cross-correlations provide insights into electron correlations.
- The study highlights potential for novel spintronic devices.
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