Počet záznamů: 1

Antiferromagnetic ordering in the Fe(001) monolayer mediated by the Ir substrate

  1. 1.
    0342173 - FZU-D 2011 RIV JP eng J - Článek v odborném periodiku
    Máca, František - Drchal, Václav - Turek, Ilja - Bengone, O. - Redinger, J. - Kudrnovský, Josef
    Antiferromagnetic ordering in the Fe(001) monolayer mediated by the Ir substrate.
    e-Journal of Surface Science and Nanotechnology. Roč. 8, - (2010), s. 152-156 ISSN 1348-0391
    Grant CEP: GA ČR GA202/07/0456; GA MŠk OC09028; GA ČR GA202/09/0775
    Výzkumný záměr: CEZ:AV0Z10100520; CEZ:AV0Z20410507
    Klíčová slova: density functional calculations * iron * iridium * metal-metal magnetic thin film structures
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus

    We show that the Fe-monolayer on the fcc(001) surface of iridium has a strong tendency to order antiferromagnetically in the relaxed case. Unrelaxed Fe/Ir(001) sample has the ground state ferromagnetic. The antiferromagnetism is stabilized by layer-relaxations. The relevant part of the present study is the evaluation of pair exchange interactions between Fe-atoms in the Fe-overlayer as a function of increasing model relaxation of first interlayer distance which allows a detailed understanding of the antiferromagnetism of Fe/Ir(001) overlayer. We compare the exchange interactions in the overlayer with interactions in one Fe-monolayer embedded in the Ir crystal where the substrate influence is stronger. Our calculations indicate that in the overlayer as well as in the embedded monolayer more complex, spiral-like state can be stabilized rather than a simple c(2x2)-antiferromagnetic order.
    Trvalý link: http://hdl.handle.net/11104/0184982