论文标题
北D1-XSRXNIO2无限层超导薄膜中的近托散射
Kondo scattering in underdoped Nd1-xSrxNiO2 infinite-layer superconducting thin films
论文作者
论文摘要
最近发现，无限层中超导性的发现产生了巨大的研究努力，但其父级化合物的基态仍在争论中。在这里，我们报告了近代散射在不足的ND1-XSRXNIO2薄膜中的主要作用的实验证据。在超导转变之前，在不足的ND1-XSRXNIO2样品中观察到与对数温度依赖性相关的电阻率最小与对数温度依赖性相关。线性缩放行为$σ_{xy}^{ahe} \simσ_{xx} $之间的异常霍尔电导率之间的$σ_{xy}^{ahe} $和电导率$σ_{xx} $在低温下均显示出占主导地位的Kondo散射。发现弱（反）定位的作用是次要的。我们的实验可以帮助阐明不属于的ND1-XSRXNIO2无限层薄膜中的基本物理。
The recent discovery of superconductivity in infinite-layer nickelates generates tremendous research endeavors, but the ground state of their parent compounds is still under debate. Here, we report experimental evidences for the dominant role of Kondo scattering in the underdoped Nd1-xSrxNiO2 thin films. A resistivity minimum associated with logarithmic temperature dependence in both longitudinal and Hall resistivities are observed in the underdoped Nd1-xSrxNiO2 samples before the superconducting transition. A linear scaling behavior $σ_{xy}^{AHE}\simσ_{xx}$ between anomalous Hall conductivity $σ_{xy}^{AHE}$ and conductivity $σ_{xx}$ is revealed, verifying the dominant Kondo scattering at low temperature. The effect of weak (anti-)localization is found to be secondary. Our experiments can help clarifying the basic physics in the underdoped Nd1-xSrxNiO2 infinite-layer thin films.
