Control of anisotropic charge and orbital property in quasi-two dimensional transition metal oxides

我们研究了准二维过渡金属氧化物中电荷/轨道有序的宏观电子性质的各向异性，这种各向异性与低对称性的晶体结构畸变密切相关。对于具有单层和双层结构的层状锰矿石，我们制备了电荷/轨道有序态的宏观单畴，并成功地观察到各向异性介电、光学和弹性性质以及新的集体激发。

We have investigated the anisotropy of the macroscopic electronic property for the charge/orbital ordering in quasi-two-dimensional transition metal oxides, which is strongly coupled to the crystal structural distortion with a low-symmetry. For the layered manganites with the single-layered and/or bi-layered structure, we fabricated the macroscopic single-domain of the charge/orbital ordered state, and succeeded in the observation of anisotropic dielectric, optical and elastic properties and novel collective excitation.