大磁矩铁磁金属稀土材料:CeGe_(2)单层  

Large Magnetic Moment Ferromagnetic Rare Earth Material:CeGe_(2) Monolayer

作　　者：唐歡 Tang Huan(Southwest University School of Physical Science and Technology,Chongqing 400715,China)

机构地区：[1]西南大学物理科学与技术学院,重庆400715

出　　处：《科学技术创新》2022年第35期41-44,共4页Scientific and Technological Innovation

摘　　要：二维(2D)本征铁磁金属材料由于其铁磁性和金属性的特殊结合,为研究自旋电子学器件提供了前所未有的机会,并提供了有前途的器件应用。采用自旋-轨道耦合密度泛函理论(DFT)、蒙特卡罗(MC)模拟等方法,探索了CeGe_(2)单层在室温下的力、热和机械稳定性,以及电子性质和磁性。研究结果表明:CeGe_(2)单层是一种铁磁金属材料,基于海森堡模型,发现CeGe_(2)具有较高的居里温度,表明CeGe_(2)单层在自旋电子器件领域有潜在的应用。Two-dimensional(2D)intrinsic ferromagnetic metal materials offer unprecedented opportunities to study spintronics devices and promising device applications due to their special combination of ferromagnetic and gold properties.In this paper,we use spin-orbit coupled density functional theory(DFT)and Monte Carlo(MC)simulations to explore the mechanical,thermal and mechanical stability,as well as the electronic properties and magnetic properties of CeGe_(2) monolayers at room temperature.The results show that CeGe_(2) monolayer is a ferromagnetic metal material.Based on the Heisenberg model,it is found that CeGe_(2) monolayer has a high Curie temperature,which indicates that CeGe_(2) monolayer has a potential application in the field of spintronic devices.

关 键 词：二维材料 铁磁金属 密度泛函理论 居里温度 

分 类 号：O64[理学—物理化学]