论文标题
易于轴的抗铁磁共振的各向异性gigahertz van der waals抗fiferromagnet crsbr
Anisotropic Gigahertz Antiferromagnetic Resonances of the Easy-Axis van der Waals Antiferromagnet CrSBr
论文作者
论文摘要
我们报告了范德华易于轴抗铁磁铁CRSBR中抗磁共振共振的测量。层间交换场和磁晶各向异性场与实验室磁场相媲美，从而可以访问各种各样的Gigahertz频率动力学模式。通过将共振频率映射为施加磁场的大小和角度的函数，我们确定了抗铁磁动力学的不同状态。该光谱与两个抗磁性耦合的sublattices的Landau-Lifshitz模型非常吻合，该模型占了层间交换和三轴磁各向异性。拟合使我们能够量化管理磁化动力学的参数：在5 K时，层间交换场为$μ_0h_e = $ 0.395（2）t，硬性和中间轴偶然的各向异性参数为$μ_0h_c = $ 1.30（$ 1.30（2）T和$ _0 h_a = 0.0 h_a = 0.383（7）t.383（7）可以使用平面磁场来控制抗磁共振共振之间的杂交程度。
We report measurements of antiferromagnetic resonances in the van der Waals easy-axis antiferromagnet CrSBr. The interlayer exchange field and magnetocrystalline anisotropy fields are comparable to laboratory magnetic fields, allowing a rich variety of gigahertz-frequency dynamical modes to be accessed. By mapping the resonance frequencies as a function of the magnitude and angle of applied magnetic field we identify the different regimes of antiferromagnetic dynamics. The spectra show good agreement with a Landau-Lifshitz model for two antiferromagnetically-coupled sublattices, accounting for inter-layer exchange and triaxial magnetic anisotropy. Fits allow us to quantify the parameters governing the magnetic dynamics: at 5 K, the interlayer exchange field is $μ_0 H_E =$ 0.395(2) T, and the hard and intermediate-axis anisotropy parameters are $μ_0 H_c =$ 1.30(2) T and $μ_0 H_a =$ 0.383(7) T. The existence of within-plane anisotropy makes it possible to control the degree of hybridization between the antiferromagnetic resonances using an in-plane magnetic field.
