论文标题
超导nd0.8sr0.2nio2薄膜的稳定性
Stability of Superconducting Nd0.8Sr0.2NiO2 Thin Films
论文作者
论文摘要
在具有无限层结构的镍薄膜中发现超导状态已为研究非常规超导性的新方法铺平了。到目前为止，由于样品制备困难，该领域的研究仍然非常有限。在这里，我们报告了超导ND0.8SR0.2NIO2薄膜（TC = 8.0-11.1 K）的成功制备，并研究了此类膜在环境环境，水和电化学条件下的稳定性。我们的工作表明，ND0.8SR0.2NIO2的超导状态非常稳定，可以在20度摄氏20度和35％的相对湿度下持续至少47天连续接触空气。此外，我们表明，在室温下浸入去离子水中5小时后，超导性消失了。令人惊讶的是，它在离子液体门控条件下还可以生存，其施加电压高达4V，它比常规的钙钛矿复合氧化物更稳定。
The discovery of superconducting states in the nickelate thin film with infinite-layer structure has paved a new way for studying unconventional superconductivity. So far, research in this field is still very limited due to difficulties in sample preparation. Here we report on the successful preparation of superconducting Nd0.8Sr0.2NiO2 thin film (Tc = 8.0 - 11.1 K) and study the stability of such films in ambient environment, water and under electrochemical conditions. Our work demonstrates that the superconducting state of Nd0.8Sr0.2NiO2 is remarkably stable, which can last for at least 47 days continuous exposure to air at 20 degree Celsius and 35% relative humidity. Further we show the superconductivity disappears after being immersed in de-ionized water at room temperature for 5 hours. Surprisingly, it can also survive under ionic liquid gating conditions with applied voltage up to 4 V, which is even more stable than conventional perovskite complex oxides.
