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Quenching of the Hall effect in localised high magnetic field regions

✍ Scribed by K.S. Novoselov; A.K. Geim; S.V. Dubonos; Y.G. Cornelissens; F.M. Peeters; J.C. Maan

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
136 KB
Volume
12
Category
Article
ISSN
1386-9477

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✦ Synopsis

We report the suppression of the Hall e ect in a mesoscopic Hall cross with a strong magnetic ΓΏeld only in the centre and vanishingly small outside. The local magnetic ΓΏeld is produced by placing Dy pillar on top of a structure with a high-mobility two-dimensional electron gas. The e ect 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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