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J Nanosci Nanotechnol. 2012 Jun;12(6):5122-4.

Ferromagnetic GaAs structures with single Mn delta-layer fabricated using laser deposition.

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  • 1Physico-Technical Research Institute of University of Nizhny Novgorod, 23/3 Gagarine Ave., 603950, Nizhny Novgorod, Russian Federation.


The new technique combining metal-organic chemical vapor epitaxy with laser ablation of solid targets was used for fabrication of ferromagnetic GaAs structures with single Mn delta-doped layer. The structures demonstrated anomalous Hall effect, planar Hall effect, negative and anisotropic magnetoresistance in temperature range of 10-35 K. In GaAs structures with only single Mn delta-layer (without additional 2D hole gas channel or quantum well) ferromagnetism was observed for the first time.

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