论文标题
la $ _2 $ ni $ _2 $ in in la $ _2 $ in
Superconductivity in La$_2$Ni$_2$In
论文作者
论文摘要
我们在这里报告LA $ _2 $ ni $ _2 $ in的单晶的属性。电阻率和比密度功能理论（DFT）计算的结果同意的，发现la $ _ {2} $ ni $ _ {2} $ IN是一种弱相关的金属，其中Ni磁力几乎完全消退，仅留下了弱的状态加强量增强的状态。在低于0.9 $ \，$ k的温度下观察到超导性。在最低温度下对电阻率，磁化率和比热的场和温度依赖性的详细分析表明，la $ _2 $ _2 $ ni $ _2 $ IN是一个肮脏的II型II型超导体，具有可能的S波间隙对称性。铁磁夹杂物的纳米群体显着影响子段状态，导致特定热量$ c（t）$在$ t \ ll t_ \ t_ \ text {c} $的非指数温度依赖性。
We report here the properties of single crystals of La$_2$Ni$_2$In. Electrical resistivity and specific heat measurements concur with the results of Density Functional Theory (DFT) calculations, finding that La$_{2}$Ni$_{2}$In is a weakly correlated metal, where the Ni magnetism is almost completely quenched, leaving only a weak Stoner enhancement of the density of states. Superconductivity is observed at temperatures below 0.9$\,$K. A detailed analysis of the field and temperature dependencies of the resistivity, magnetic susceptibility, and specific heat at the lowest temperatures reveals that La$_2$Ni$_2$In is a dirty type-II superconductor with likely s-wave gap symmetry. Nanoclusters of ferromagnetic inclusions significantly affect the subgap states resulting in a non-exponential temperature dependence of the specific heat $C(T)$ at $T\ll T_\text{c}$.
