Si-$_{1-x}$-Mn $_x$（$x\approx 0.35$）合金的室温铁磁性和反常霍尔效应
Room temperature ferromagnetism and anomalous Hall effect in Si$_{1-x}$Mn$_x$ ($x\approx 0.35$) alloys
摘要：
详细研究了Si $_{1-x}$ Mn $_x$（$x\approx 0.35$）薄膜的磁性和输运性质。我们观察到这些薄膜在室温下的反常霍尔效应（AHE）。磁测量结果和AHE数据是一致的，并证明了长程铁磁（FM）秩序的存在下研究的系统。硅$_{1-x}$锰$_x$（$x\approx 0.35$）薄膜的AHE和磁性能与其导电性和衬底类型的相关性。基于两相磁性材料的思想，讨论了一个理论模型，其中具有局域化磁矩的分子团簇嵌入在弱巡游铁磁体的基体中。在高温下的长程铁磁秩序主要是由于斯通纳增强集群之间的交换耦合通过热自旋涨落（顺磁）在矩阵。理论预测和实验数据是在良好的定性协议。
英文摘要：
A detailed study of the magnetic and transport properties of Si$_{1-x}$Mn$_x$ ($x\approx 0.35$) films is presented. We observe the anomalous Hall effect (AHE) in these films up to room temperature. The results of the magnetic measurements and the AHE data are consistent and demonstrate the existence of long-range ferromagnetic (FM) order in the systems under study. A correlation of the AHE and the magnetic properties of Si$_{1-x}$Mn$_x$ ($x\approx 0.35$) films with their conductivity and substrate type is shown. A theoretical model based on the idea of a two-phase magnetic material, in which molecular clusters with localized magnetic moments are embedded in the matrix of a weak itinerant ferromagnet, is discussed. The long-range ferromagnetic order at high temperatures is mainly due to the Stoner enhancement of the exchange coupling between clusters through thermal spin fluctuations (paramagnons) in the matrix. Theoretical predictions and experimental data are in good qualitative agreement.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
