A Numerical Model of Crossed Andreev Reflection and Charge Imbalance

Details A Numerical Model of Crossed Andreev Reflection and Charge Imbalance A Numerical Model of Crossed Andreev Reflection and Charge Imbalance

2012-03-22

arxiv.org/abs/1203.4949v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 12 figures

Scientific paper

We present a numerical model of local and nonlocal transport properties in a lateral spin valve structure consisting of two magnetic electrodes in contact with a third perpendicular superconducting electrode. By considering the transport paths for a single electron incident at the local F/S interface - in terms of probabilities of crossed or local Andreev reflection, elastic cotunneling or quasiparticle transport - we show that this leads to nonlocal charge imbalance. We compare this model with experimental data from an aluminum-permalloy (Al/Py) lateral spin valve geometry device and demonstrate the effectiveness of this simple approach in replicating experimental behavior.

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