Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 18: Multiferroics IV: Exotic Properties and Dynamics (jointly with DF, DS, KR, TT)

MA 18.1: Vortrag

Dienstag, 15. März 2011, 10:45–11:00, HSZ 04

Polarization and magnetization dynamics of a field-driven multiferroic structure — •Alexander Sukhov¹, Chenglong Jia¹, Paul P. Horley², and Jamal Berakdar¹ — ¹Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06120 Halle/Saale, Germany — ²Centro de Investigation en Materiales Avanzados, S.C. (CIMAV), 31109 Chihuahua, Mexico

A multiferroic chain with a linear magnetoelectric coupling induced by electrostatic screening at the ferroelectric/ferromagnet interface [1] is considered. We study theoretically the dynamic ferroelectric and magnetic response to external magnetic and electric fields by utilizing an approach based on coupled Landau-Khalatnikov and finite-temperature Landau-Lifshitz-Gilbert equations. Additionally, we make comparisons with Monte Carlo calculations. It is demonstrated [2] that for material parameters corresponding to BaTiO₃/Fe the polarization and the magnetization are controllable by oscillating external magnetic and electric fields, respectively.
T. Cai, S. Ju, J. Lee, N. Sai, A.A. Demkow, Q. Niu, Z. Li, J. Shi and E. Wang, Phys. Rev. B 80, 140415(R) (2009). [2] A. Sukhov, C.L. Jia, P.P. Horley and J. Berakdar, J. Phys.: Condens. Matter 22, 352201 (2010).