Magnetic and electric properties of ultrathin oxide films (B05)

在本项目中，我们研究了厚度仅为几个单元的嵌入薄膜中的电磁邻近效应。材料体系包括：(1)La0.7Sr0.3MnO_3嵌入到SrRuO_3、LaNiO_3或SrVO_3中，(2)铁氧体与MgIn_2O_4或ZnGa_2O_4相结合，以及(3)以铁电、多铁或铁磁顺序生长在奇异衬底上的锰氧化物薄膜。磁输运测量被用来研究电导率和磁序，并最终定位界面附近的电导率。

In this project the electric and magnetic proximity effects in embedded films with a thickness of a few unit cells only are studied. Material systems are: (1) La0.7Sr0.3MnO3 embedded in SrRuO3, LaNiO3 or SrVO3, (2) ferrites in combination with MgIn2O4 or ZnGa2O4 as well as (3) manganite films grown on exotic substrates with ferroelectric, multiferroic or ferromagnetic order. Magnetotransport measurements are used to investigate conductivity and magnetic order and eventually to localize the conductivity near the interfaces.