论文标题
Laalo $ _3 $/eutio $ _3 $/sr $ _ {0.99} $ ca $ _ {0.01} $ tio $ _3 $接口
Tunable Magnetic Scattering and Ferroelectric Switching at the LaAlO$_3$/EuTiO$_3$/Sr$_{0.99}$Ca$_{0.01}$TiO$_3$ Interface
论文作者
论文摘要
铁电和铁磁阶很少共存，磁电耦合更加稀缺。结合这些订单的可能途径是界面设计，在该界面设计中，在组成材料下形成的订单可以重叠和相互作用。 Using a combination of magneto-transport and scanning SQUID measurements, we explore the interactions between ferroelectricity, magnetism, and the 2D electron system (2DES) formed at the novel LaAlO$_3$/EuTiO$_3$/Sr$_{0.99}$Ca$_{0.01}$TiO$_3$ heterostructure.我们发现，界面上的电子体验磁性散射以及Eutio $ _3 $ layer中的不同Curie-Weiss型行为。 2DE还受到SR $ _ {0.99} $ CA $ _ {0.01} $ TIO $ _3 $ bumb的可切换铁电极化的影响。尽管2DES与磁性和铁电相互作用，但我们表明，导电电子的存在对Eutio $ _3 $层中的磁化没有影响。我们的结果为实现新的多性系统提供了第一步，其中磁性和铁电性可以通过中间导电层相互作用。
Ferroelectric and ferromagnetic orders rarely coexist, and magnetoelectric coupling is even more scarce. A possible avenue for combining these orders is by interface design, where orders formed at the constituent materials can overlap and interact. Using a combination of magneto-transport and scanning SQUID measurements, we explore the interactions between ferroelectricity, magnetism, and the 2D electron system (2DES) formed at the novel LaAlO$_3$/EuTiO$_3$/Sr$_{0.99}$Ca$_{0.01}$TiO$_3$ heterostructure. We find that the electrons at the interface experience magnetic scattering appearing along with a diverging Curie-Weiss-type behaviour in the EuTiO$_3$ layer. The 2DES is also affected by the switchable ferroelectric polarization at the Sr$_{0.99}$Ca$_{0.01}$TiO$_3$ bulk. While the 2DES interacts with both magnetism and ferroelectricity, we show that the presence of the conducting electrons has no effect on magnetization in the EuTiO$_3$ layer. Our results provide a first step towards realizing a new multiferroic system where magnetism and ferroelectricity can interact via an intermediate conducting layer.
