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Regensburg 2016 – scientific programme

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MA: Fachverband Magnetismus

MA 38: Multiferroics I (DF with MA)

MA 38.8: Talk

Thursday, March 10, 2016, 12:10–12:30, H25

Ab initio calculation of ARPES and SPLEED spectra for the multiferroic heterostructure Co/BaTiO3 — •Stephan Borek1, Jürgen Braun1, Jan Minár1,2, and Hubert Ebert11Ludwig-Maximilians-Universität München — 2University of West Bohemia Pilsen

Multiferroic heterostructures possess promising properties concerning technical applications. It has been shown recently that the combination of x-ray absorption spectroscopy (XAS), x-ray magnetic circular dichroism (XMCD) and x-ray magnetic linear dichroism (XMLD) can be used to determine the magnetic properties of the Co surface layers of the multiferroic system Co/BaTiO3 [1]. In this way an indirect investigation of the coupling mechanisms between the ferroelectric and the ferromagnetic materials gets possible. In our work we consider complementary spectroscopic methods which are suitable for the determination of the properties of multiferroic heterostructures. For this purpose we used the theoretical description of angle-resolved photoemission spectroscopy (ARPES) and spin-polarized low energy electron diffraction (SPLEED) to investigate the coupling mechanisms at the Co/BTO interface. We will show that both methods provide detailed insight into the behaviour of the electronic structure during a switching of the electric polarization of BaTiO3.
M. Hoffmann et al., Journal of Phys: Cond. Matter 27, 426003 (2015)

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