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TT: Fachverband Tiefe Temperaturen

TT 2: Multiferroics 1 (jointly with DF, DS, KR, and MA)

TT 2.5: Vortrag

Montag, 11. März 2013, 10:30–10:45, H3

Optimized magnetoelectric interface coupling — •Igor Maznichenko¹, Arthur Ernst², and Ingrid Mertig^1,2 — ¹Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06099 Halle (Saale), Germany — ²Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle (Saale), Germany

It was shown that magnetoelectric coupling occurs at interfaces between a magnetic and a ferroelectric material. Our idea is to construct heterostructures with a particularly strong magnetoelectric coupling. We concentrate on the optimization of the magnetic layer. We demonstrate that a small magnetic moment at the interface can still transfer the magnetoelectric coupling to a strong ferromagnet and could cause significant response. The idea is supported by numerical simulations within density functional theory using the self-consistent KKR Green function method.