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Effect of edge transmission and elastic scattering on the resistance of magnetic barriers

M. Cerchez·S. Hugger·T. Heinzel·N. Schulz
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Abstract

Strong magnetic barriers are defined in two-dimensional electron gases by magnetizing dysprosium ferromagnetic platelets on top of a Ga[Al]As heterostructure. A small resistance across the barrier is observed even deep inside the closed regime. We have used semiclassical simulations to explain this behavior quantitatively in terms of a combined effect of elastic electron scattering inside the barrier region and E x B drift at the intersection of the magnetic barrier with the edge of the Hall bar.

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M. Cerchez, S. Hugger, T. Heinzel, N. Schulz. 2007-01-05. Effect of edge transmission and elastic scattering on the resistance of magnetic barriers. https://doi.org/10.1103/physrevb.75.035341

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