Using a combination of local spin density and Hubbard 1 approximations we study the mechansim of exchange interacion in EuX (X=O, S, Se and Te). We reproduce known experimental results about bulk modulus, critical pressure for structural phase transition, magnetic ordering temperature, spin--wave dispersions as well as momentum-- and tempearuture--dependent band shift. Our numerical results show pressure induced competition between the hybirization enhanced exchange interaction and Kondo--like coupling in EuO. Possible ways to enhance T_{c} are discussed.
@article{arxiv.1003.2039,
title = {Electronic Structure Calculations of Magnetic Exchange Interactions in Europium Monochalcogenides},
author = {Xiangang Wan and Jinming Dong and Sergej Y. Savrasov},
journal= {arXiv preprint arXiv:1003.2039},
year = {2015}
}