论文标题
y $ _ {0.85} $ tb $ _ {0.15} $ ba $ _2 $ _2 $ cu $ _3 $ o $ o $ o $ _ {7-x} $ films $ films $ _ {0.15} $ _ {0.15} $ _ {0.15} $ _ {0.15} $ _ {0.15}
In-plane anisotropy of electrical transport in Y$_{0.85}$Tb$_{0.15}$Ba$_2$Cu$_3$O$_{7-x}$ films
论文作者
论文摘要
我们制造高质量的C轴上的外延YBA $ _2 $ cu $ _3 $ o $ $ _ {7-x} $胶片，由15％的Yttrium Atoms击中了Terbium（YTBCO）（YTBCO）并研究其电气性能。与纯的YBA $ _2 $ _2 $ _3 $ _3 $ o $ _ {7-x} $胶片相比，结核病替换降低了电荷载体密度，导致电阻率增加并降低了临界电流密度。 YTBCO膜的电性能在超导和正常状态中显示出平面各向异性，从而提供了无双膜的证据。出乎意料的是，桥梁的电阻过渡还证明了平面各向异性，可以在Tinkham的电阻跃迁模型和Berezinskii-Kosterlitz-thouless（BKT）模型中解释，根据样品参数。我们认为YTBCO膜是关于Cuprate超导体中BKT过渡和制造具有高动力学电感的设备的基础研究的有前途的平台。
We fabricate high-quality c-axis oriented epitaxial YBa$_2$Cu$_3$O$_{7-x}$ films with 15% of yttrium atoms replaced by terbium (YTBCO) and study their electrical properties. The Tb substitution reduces the charge carrier density resulting in increased resistivity and decreased critical current density compared to the pure YBa$_2$Cu$_3$O$_{7-x}$ films. The electrical properties of the YTBCO films show an in-plane anisotropy in both the superconducting and normal state providing evidence for the twin-free film. Unexpectedly, the resistive transition of the bridges also demonstrates the in-plane anisotropy that can be explained within the framework of Tinkham's model of the resistive transition and the Berezinskii-Kosterlitz-Thouless (BKT) model depending on the sample parameters. We consider YTBCO films to be a promising platform for both the fundamental research on the BKT transition in the cuprate superconductors and for the fabrication of devices with high kinetic inductance.
