Characterizing the Magnetic Interfacial Coupling of the Fe/FeGe Heterostructure by Ferromagnetic Resonance.
Zong-Kai XieYan LiZi-Zhao GongXu YangYang LiRui SunNa LiYun-Bing SunJian-Jun ZhaoZhao-Hua ChengWei HePublished in: ACS applied materials & interfaces (2020)
We characterize the magnetic interfacial coupling of the Fe/FeGe heterostructure and its influence on the magnetic damping via ferromagnetic resonance in the temperature range of 200-300 K. When the temperature is below the critical temperature of FeGe, the interfacial coupling rises. The strength of the magnetic interfacial coupling is determined as a function of the temperature and reaches up to 0.194 erg/cm2 at 200 K. Meanwhile, the Gilbert damping of the Fe layer is enhanced from 0.035 at 300 K to 0.050 at 200 K. The enhancement is linearly proportional to the strength of magnetic interfacial coupling. We attribute the enhancement to the interfacial coupling that transfers spin angular momentum from Fe to FeGe via the exchange interaction. Our results reveal that the interfacial coupling is an effective approach to inject spin current into the chiral spin texture.
Keyphrases
- room temperature
- ionic liquid
- electron transfer
- molecular dynamics simulations
- molecularly imprinted
- perovskite solar cells
- magnetic resonance imaging
- magnetic resonance
- single molecule
- energy transfer
- metal organic framework
- genome wide
- computed tomography
- density functional theory
- aqueous solution
- dna methylation
- mass spectrometry
- high resolution
- solid phase extraction