论文标题
$ \ text {cu} _ \ text {2} \ text {oseo} _ \ text {3} $/$ \ mathrm {nife} $ heteroStructures
Hybrid magnetization dynamics in $\text{Cu}_\text{2}\text{OSeO}_\text{3}$/$\mathrm{NiFe}$ heterostructures
论文作者
论文摘要
We investigate the coupled magnetization dynamics in heterostructures of a single crystal of the chiral magnet $\mathrm{Cu_2OSeO_3}$ (CSO) and a polycrystalline ferromagnet $\mathrm{NiFe}$ (Py) thin film using broadband ferromagnetic resonance (FMR) at cryogenic temperatures.我们观察到CSO的helimagnetic转变温度以下的混合模式（HM）的激发。该HM归因于CSO/PY接口处的自旋动力学。我们通过测量其在外部磁场的平面旋转中测量其共振频率来研究HM。我们发现，与CSO和PY的FMR相反，HM表现出主要的四倍各向异性。
We investigate the coupled magnetization dynamics in heterostructures of a single crystal of the chiral magnet $\mathrm{Cu_2OSeO_3}$ (CSO) and a polycrystalline ferromagnet $\mathrm{NiFe}$ (Py) thin film using broadband ferromagnetic resonance (FMR) at cryogenic temperatures. We observe the excitation of a hybrid mode (HM) below the helimagnetic transition temperature of CSO. This HM is attributed to the spin dynamics at the CSO/Py interface. We study the HM by measuring its resonance frequencies for in plane rotations of the external magnetic field. We find that the HM exhibits dominantly four-fold anisotropy, in contrast to the FMR of CSO and Py.
