Ferrotoroidic polarons in antiferrodistortive SrTiO3
Ferrotoroidic polarons in antiferrodistortive SrTiO3
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DOI：
10.1103/physrevb.101.214101
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发表时间：
2020-06
影响因子：
3.7
通讯作者：
T. Shimada;Yuuki Ichiki;Gen Fujimoto;Le Van Lich;Tao Xu;Jie Wang;H. Hirakata
中科院分区：
文献类型：
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作者：
T. Shimada;Yuuki Ichiki;Gen Fujimoto;Le Van Lich;Tao Xu;Jie Wang;H. Hirakata
具有非平凡拓扑场结构的新准粒子的发现，如极涡、天子和梅隆，在技术范式中充满希望。在这里，作者通过设计多余的电子极化子证明了一种具有拓扑极化涡旋的铁电准粒子。它们进一步表明，电子极化子携带的磁矩与类铁性相耦合，即磁电效应。这一结果为铁电材料的最终小型化和一类新的功能极化子家族提供了洞察。
Discovery of new quasiparticles with nontrivial topological field textures, such as polar vortices, skyrmions, and merons, holds promise in technological paradigms. Here, the authors demonstrate a ferroelectric quasiparticle with topological polarization vortices by engineering excess electron polarons. They further show that the electron polaron carries a magnetic moment coupled with ferrotoroidicity, i.e., the magnetoelectric effect. This result provides insight into the ultimate miniaturization of ferrotoroic materials and a new class of functional polaron families.