论文标题
拉曼在各向异性三角晶格抗fiferromagnet中与dzyaloshinskii-moriya相互作用的扭矩平衡自旋波理论
Torque equilibrium spin wave theory of Raman scattering in an anisotropic triangular lattice antiferromagnet with Dzyaloshinskii-Moriya interaction
论文作者
论文摘要
我们应用扭矩平衡自旋波理论（TESWT）来研究三角形晶格中使用dzyaloshinskii-moriya（DM）相互作用的各向异性XXZ抗铁磁模型。考虑到准粒子真空作为我们的参考，我们使用TESWT形式主义提供了对沮丧的三角形晶格磁铁的非结合基态的准确分析。我们根据模型系统参数阐明了量子波动对订购波矢量的影响。我们研究了单一磁化散布，使用光谱函数的两麦克农连续体以及Bimagnon和Trimagnon激发的拉曼光谱。我们介绍了$ HH，VV $和Bimagnon和Trimagnon激发光谱的$ HH，VV $的结果，其中$ h（v）$代表水平（垂直）极化。我们的计算表明，$ hh $和$ hv $偏振谱都可以用于确定系统各向异性的程度。我们计算Ba $ _3 $ cosb $ _2 $ o $ $ _9 $和CS $ _2 $ CUCL $ _4 $的拉曼光谱。
We apply torque equilibrium spin wave theory (TESWT) to investigate an anisotropic XXZ antiferromagnetic model with Dzyaloshinskii-Moriya (DM) interaction in a triangular lattice. Considering the quasiparticle vacuum as our reference, we provide an accurate analysis of the non-collinear ground state of a frustrated triangular lattice magnet using the TESWT formalism. We elucidate the effects of quantum fluctuations on the ordering wave vector based on model system parameters. We study the single magnon dispersion, the two-magnon continuum using the spectral function, and the Raman spectrum of bimagnon and trimagnon excitations. We present our results for the $HH, VV$, and the $HV$ polarization Raman geometry dependence of the bimagnon and the trimagnon excitation spectrum where $H (V)$ represents horizontal (vertical) polarization. Our calculations show that both the $HH$ and the $HV$ polarization spectrum can be used to determine the degree of anisotropy of our system. We calculate the Raman spectra of Ba$_3$CoSb$_2$O$_9$ and Cs$_2$CuCl$_4$.
