论文标题
超级传导性在唯一紧张的ruo $ _ {2} $电影中
Superconductivity in Uniquely Strained RuO$_{2}$ Films
论文作者
论文摘要
我们报告了Ruo $ _2 $单链晶体电影中超导性的应变工程，这些电影是在金红石Tio Tio $ _2 $和MGF $ _2 $ substrates上的外恋种植的，具有各种水晶取向。超导过渡温度和晶格参数之间的系统映射表明，特定氟苯基氧键的缩短是超导ruo $ _2 $胶片的常见特征。从头开始计算应变的RUO $ _2 $膜的电子和语音结构，这表明软音子模式对于出现超导性的重要性。这些发现表明，简单的过渡金属氧化物（例如金红石结构）可能适合通过通过外延菌株控制声子模式进一步探索超导性。
We report strain engineering of superconductivity in RuO$_2$ singlecrystalline films, which are epitaxially grown on rutile TiO$_2$ and MgF$_2$ substrates with various crystal orientations. Systematic mappings between the superconducting transition temperature and the lattice parameters reveal that shortening of specific ruthenium-oxygen bonds is a common feature among the superconducting RuO$_2$ films. Ab initio calculations of electronic and phononic structures for the strained RuO$_2$ films suggest the importance of soft phonon modes for emergence of the superconductivity. The findings indicate that simple transition metal oxides such as with the rutile structure may be suitable for further exploring superconductivity by controlling phonon modes through the epitaxial strain.
