钙钛矿超晶格的演生磁电物性

钙钛矿过渡金属氧化物中存在诸多自由度（如晶格、电荷、自旋和轨道），这些自由度 之间的相互耦合以及相互竞争会诱导出很多奇异物性，如高温超导、庞磁电阻效应、多铁性等， 这些物性在量子器件的发展过程中扮演了重要的角色。在此基础上，若再将不同特性的氧化物材 料耦合在一起形成超晶格，通过界面处的晶格重组与电子重组，体系可呈现出更加丰富的物理和 更多可调控的性能。本综述主要关注钙钛矿超晶格中的磁电物性。首先介绍了超晶格中磁性调控 的几种物理机制，然后对超晶格中的杂化非本征铁电性以及电子铁电性进行了重点讨论，最后围 绕超晶格中的磁电耦合效应进行了讨论和总结。

Emergent magnetism and ferroelectricity in perovskite superlattices

Perovskite transition-metal oxides have many degrees of freedom (e.g., lattice, charge, spin, and orbital). The couplings and competitions among these degrees of freedom can lead to numerous novel phenomena, such as high-temperature superconductivity, colossal magnetoresistance, and multiferroicity, which play important roles in the development of quantum devices. Interestingly, if two different materials are further coupled with each other, richer physical phenomena and more controllable performance will be presented through the interfacial lattice and electronic reconstructions. This review mainly focuses on the physical properties of perovskite superlattices, including magnetism, ferroelectricity and magnetoelectric coupling. First, several physical mechanisms associated with magnetic regulation are introduced. Then, hybrid improper ferroelectricity and electronic ferroelectricity are discussed. Finally, magnetoelectric coupling in perovskite superlattices is studied and reviewed.