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Propagation Control of Octahedral Tilt in SrRuO3 via Artificial Heterostructuring

机译:通过人工异质结构在SrruO3中八面体倾斜的繁殖控制

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Bonding geometry engineering of metal–oxygen octahedra is a facile way of tailoring various functional properties of transition metal oxides. Several approaches, including epitaxial strain, thickness, and stoichiometry control, have been proposed to efficiently tune the rotation and tilt of the octahedra, but these approaches are inevitably accompanied by unnecessary structural modifications such as changes in thin‐film lattice parameters. In this study, a method to selectively engineer the octahedral bonding geometries is proposed, while maintaining other parameters that might implicitly influence the functional properties. A concept of octahedral tilt propagation engineering is developed using atomically designed SrRuO3/SrTiO3 (SRO/STO) superlattices. In particular, the propagation of RuO6 octahedral tilt within the SRO layers having identical thicknesses is systematically controlled by varying the thickness of adjacent STO layers. This leads to a substantial modification in the electromagnetic properties of the SRO layer, significantly enhancing the magnetic moment of Ru. This approach provides a method to selectively manipulate the bonding geometry of strongly correlated oxides, thereby enabling a better understanding and greater controllability of their functional properties.
机译:金属 - 氧八面体的粘接几何工程是剪裁过渡金属氧化物各种功能性的容易方式。已经提出了几种方法,包括外延菌株,厚度和化学计量控制,以有效地调整八面体的旋转和倾斜,但这些方法不可避免地伴随着不必要的结构修改,例如薄膜晶格参数的变化。在本研究中,提出了一种选择性地工程八层粘接几何形状的方法,同时保持可能隐含地影响功能性质的其他参数。使用原子设计的SRRUO3 / SRTIO3(SRO / STO)超晶格开发了八面体倾斜繁殖工程的概念。特别地,通过改变相邻STO层的厚度来系统地控制具有相同厚度的SRO6八面体倾斜的RuO6八面体倾斜的传播。这导致SRO层的电磁特性的显着改性,显着提高了ru的磁矩。该方法提供了一种选择性地操纵强烈相关氧化物的键合几何形状的方法,从而能够更好地理解和更大的功能性质的可控性。

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