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Quenching of the Hall effect in localised high magnetic field region
Dubonos, S V; Novoselov, K S; Geim, A K; Maan, J C
10th International Symposium on Nanostructures: Physics and Technology. 2003;5023:465-468.
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Abstract
We report the suppression of the Hall effect in a mesoscopic Hall cross with a strong magnetic field only in the centre and vanishingly small outside. The local magnetic field is produced by placing Dy pillar on top of a structure with high-mobility two-dimensional electron gas (2DEG). The effect is found to be due to a sharp increase of the number of back-scattered and quasi-localised electron orbits. The possibility of localising electrons inside the magnetic inhomogeneity region is discussed.
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