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Fabrication and Characterization of Micromagnet Arrays on Top of GaAs/AlGaAs Heterostructures

Ye, P. ; Weiss, Dieter ; Klitzing, K. ; Eberl, K. ; Nickel, H.


Using nanolithographic techniques we deposit an array of ferromagnetic dysprosium dots with period a=500 nm on top of GaAs�AlGaAs heterojunctions. The spatially periodic stray fields affect drastically the magnetotransport properties of the electrons in the underlying two-dimensional electron gas and give rise to the long predicted magnetic commensurability oscillations. We show that ...


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