标题： 高温扩散促进了Ti-O系统的外延生长 显示英文标题

标题： High temperature diffusion enabled epitaxy of the Ti-O system

摘要： 高温促进动力学过程，这些过程可以将晶体合成引导至理想的热力学条件，从而实现高质量的样品。 虽然通过基于激光的加热方法在薄膜外延中获取极高温度变得越来越容易，但这种实用性的演示仍然处于初步阶段。 在这里，我们通过依赖氧化物衬底中氧的热激活扩散，在Ti-O系统中实现了一种新的自调节生长模式。 我们通过结构和电子测量证明了单相薄膜具有优于传统方法的结晶性，显示出氧化选择性。 这种由扩散驱动的模式在过渡金属氧化物的生长中可能有广泛的应用，为基于d轨道系统的超纯外延平台开辟了新的机会。 显示英文摘要

摘要： High temperatures promote kinetic processes which can drive crystal synthesis towards ideal thermodynamic conditions, thereby realizing samples of superior quality. While accessing very high temperatures in thin-film epitaxy is becoming increasingly accessible through laser-based heating methods, demonstrations of such utility are still emerging. Here we realize a novel self-regulated growth mode in the Ti-O system by relying on thermally activated diffusion of oxygen from an oxide substrate. We demonstrate oxidation selectivity of single phase films with superior crystallinity to conventional approaches as evidenced by structural and electronic measurements. The diffusion-enabled mode is potentially of wide use in the growth of transition metal oxides, opening up new opportunities for ultra-high purity epitaxial platforms based on d -orbital systems.