AI 中文总结
研究RuO₂中应变下的超导性，通过在特定单晶衬底上生长外延薄膜，研究不同方向电子输运和超导性，发现超导转变依赖生长取向和输运方向，观察到对泡利顺磁极限的违反，并为外延工程超导体提供机会
AI 中文摘要
RuO₂中的超导性在应变下出现，它也是反磁体候选材料，但超导性本质及其与相邻序的关系尚不清楚。为解决此问题，我们在TiO₂(100)和TiO₂(110)单晶衬底上生长外延RuO₂薄膜，研究沿不同晶体学方向的电子输运和超导性。结果表明超导转变强烈依赖于RuO₂薄膜的生长取向和输运晶体学方向，还观察到面内施加磁场时对泡利顺磁极限的强烈违反，归因于强自旋轨道散射。这些结果为外延工程超导体提供了机会。
英文摘要
The superconductivity in RuO2 emerges under strain. RuO2 is also an altermagnet candidate. The nature of superconductivity and its relation with neighboring orders, however, are not understood. To address this problem, we grew epitaxial RuO2 films on TiO2(100) and TiO2(110) single crystal substrates and studied the electronic transport and emergent superconductivity along various crystallographic directions. We show that the superconducting transition strongly depends on the growth orientation and the crystallographic direction of the transport in the RuO2 films. We also observe a strong violation of Pauli paramagnetic limit with in-plane applied magnetic field which we attribute to strong spin-orbit scattering. These results offer opportunities for epitaxially engineered superconductors.
