Resistance Resonance Effects through Magnetic Edge States

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We report on the magnetoresistance of a two-dimensional electron gas subjected to an abrupt magnetic field gradient arising from a ferromagnetic stripe fabricated at its surface. A sharp resistance resonance effect is observed at Bp due to the formation of two types of magnetic edge states that drift in opposite directions perpendicular to the magnetic field gradient for B<Bp and B>Bp. A semiclassical drift-diffusion model gives a good description of the effects of the magnetic confinement on both the diagonal and off-diagonal components of the resistivity tensor.

Original languageEnglish
Pages (from-to)2231-2234
Number of pages4
JournalPhysical Review Letters
Issue number10
Publication statusPublished - 2000


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