An overview of the spin dynamics of antiferromagnetic Mn₅Si₃

The metallic compound Mn5Si3 hosts a series of antiferromagnetic phases that can be controlled by external stimuli, such as temperature and magnetic field. In this work, we investigate the spin-excitation spectrum of bulk Mn5Si3 by combining inelastic neutron scattering measurements and density functional theory calculations. We study the evolution of the dynamical response under external parameters and demonstrate that the spin dynamics of each phase is robust against any combination of temperature and magnetic field. In particular, the high-energy spin dynamics is very characteristic of the different phases consisting of either spin waves or broad fluctuation patterns. This data set contains the data relevant to performing the spin dynamics simulations with the Spirit code, the spin-wave calculations with the SWIS code, and the neutron scattering experimental data.

金属化合物Mn₅Si₃存在一系列可通过温度、磁场等外部调控手段实现调控的反铁磁相。本研究结合非弹性中子散射（Inelastic Neutron Scattering）实验与密度泛函理论（Density Functional Theory）计算，对块体Mn₅Si₃的自旋激发谱（Spin-excitation Spectrum）展开探究。我们分析了动力学响应随外部调控参数的演化规律，并证实各反铁磁相的自旋动力学（Spin Dynamics）对任意温度与磁场的组合均表现出优异的鲁棒性。尤为值得关注的是，不同反铁磁相的高能自旋动力学特征显著，其表现形式可分为自旋波（Spin Waves）或宽幅涨落模式两类。本数据集包含三类相关数据：基于Spirit程序的自旋动力学模拟数据、基于SWIS程序的自旋波计算数据，以及非弹性中子散射实验数据。