Abstract:
We report the first evidence of electron mediated ferromagnetism in a molecular-beam-epitaxy (MBE) grown GaAs/Al0.3Ga0.7As heterostructure with Mn δ-doping. The interaction between the magnetic dopants (Mn) and the 2-dimensional electron gas (2DEG) realizes magnetic ordering when the temperature is below the Curie temperature (TC~3.2K) and the 2DEG is brought in close proximity to the Mn layer by gating.
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