Numerical model of crossed Andreev reflection and charge imbalance

J. L. Webb; B. J. Hickey; G. Burnell

doi:10.1103/PhysRevB.86.054525

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Numerical model of crossed Andreev reflection and charge imbalance

J. L. Webb, B. J. Hickey, G. Burnell

DOI 10.1103/PhysRevB.86.054525 · Physical Review B

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Abstract

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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.35	Pressure not reported	onset
Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.4	Pressure not reported	onset