标题： 非局部阻尼在一种一维相互作用电子系统中的螺旋磁体 显示英文标题

标题： Nonlocal Damping of Helimagnets in One-Dimensional Interacting Electron Systems

摘要： 我们研究相互作用的一维螺旋磁体中的磁化弛豫。 弛豫是由于磁化分布的缓慢变化导致等离子体激发态发射到巡游电子系统中而产生的。 这种耗散机制导致了高度非局部的磁化阻尼形式，该形式强烈依赖于电子-电子相互作用。 前向散射过程导致空间恒定的阻尼，而反向散射过程产生空间振荡的阻尼。 由于非局部阻尼，热涨落在整个系统中变得空间相关。 我们计算了磁性铁原子链、磁性量子线和核螺旋磁体的特征磁化弛豫时间。 显示英文摘要

摘要： We investigate magnetization relaxation in interacting one-dimensional helimagnetic systems. Relaxation results from the emission of plasmonic excitations into the itinerant electron system due to slow changes of the magnetization profile. This dissipation mechanism leads to a highly nonlocal form of magnetization damping that is strongly dependent on the electron-electron interaction. Forward scattering processes lead to a spatially constant damping, whereas backscattering processes produce a spatially oscillating damping. Due to the nonlocal damping, the thermal fluctuations become spatially correlated over the entire system. We calculate the characteristic magnetization relaxation times for chains of magnetic Fe atoms, magnetic quantum wires, and nuclear helimagnets.