论文标题
关于通过脉冲激光沉积生长的重毛脂CEIRIN5薄膜超导特性的研究
Study on Superconducting Properties of Heavy-Fermion CeIrIn5 Thin Films grown via Pulsed Laser Deposition
论文作者
论文摘要
在此，我们报告使用脉冲激光沉积技术在MGF2（001）底物上的CEIRIN5薄膜生长。 X射线衍射分析表明，薄膜主要是面向A轴的（TF1），或者是面向A和C轴的组合（TF2）。清楚地观察到了近托相干温度（TCOH）和超导性（TC）的特征，其中TC的发作分别为0.58和0.52 K，TF1和TF2的TCOH = 41 K和37 K。薄膜和散装CEIRIN5单晶的上临界场（HC2）的温度依赖性揭示了缩放行为，表明在薄膜中，非常规超导性的性质尚未改变。预计CEIRIN5薄膜的成功合成将为新的量子相打开新的途径，这可能很难在散装晶体样品中探索。
Herein, we report CeIrIn5 thin-film growth on a MgF2 (001) substrate using pulsed laser deposition technique. X-ray diffraction analysis showed that the thin films were either mainly a-axis-oriented (TF1) or a combination of a- and c-axis-oriented (TF2). The characteristic features of Kondo coherence temperature (Tcoh) and superconductivity (Tc) were clearly observed, where onset of Tc is 0.58 and 0.52 K, and Tcoh = 41 K and 37 K for TF1 and TF2, respectively. The temperature dependencies of the upper critical field (Hc2) of both thin films and the bulk CeIrIn5 single crystal revealed a scaling behavior, indicating that the nature of unconventional superconductivity has not been changed in the thin film. The successful synthesis of CeIrIn5 thin films is expected to open a new avenue for novel quantum phases that may have been difficult to explore in the bulk crystalline samples.
