We apply the previously developed theory of the resonant indirect exchange interaction to explain the ferromagnetic properties of the hybrid heterostructure consisting of a InGaAs-based quantum well (QW) sandwiched between GaAs barriers with a remote Mn delta-layer. The experimentally obtained dependence of the Curie temperature on the QW depth exhibits a maximum related to the region of resonant indirect exchange. We suggest the theoretical explanantion and a fit to this dependence as a result of the two contributions to ferromagnetism - the intralayer contribution and the resonant exchange contribution provided by the QW.
@article{arxiv.1502.01816,
title = {Resonant indirect exchange via remote 2D channel},
author = {I. V. Rozhansky and I. V. Krainov and N. S. Averkiev and B. A. Aronzon and A. B. Davydov and K. I. Kugel and V. Tripathi and E. Lahderanta},
journal= {arXiv preprint arXiv:1502.01816},
year = {2015}
}