标题： 非局部阻尼在二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： 我们研究了一维螺旋磁性系统与相互作用的巡游电子耦合时的磁化弛豫。 弛豫被认为是由于磁化分布的缓慢变化导致的一维相互作用电子系统的元激发——等离子体子的发射引起的。 这种耗散机制导致了高度非局域的磁化阻尼形式，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常数的阻尼核，而反向散射过程则产生空间振荡的贡献。 由于非局域阻尼，热涨落在整个系统中变得空间相关。 我们估算了磁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 the magnetization relaxation of a one-dimensional helimagnetic system coupled to interacting itinerant electrons. The relaxation is assumed to result from the emission of plasmons, the elementary excitations of the one-dimensional interacting electron system, caused by 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 kernel, while backscattering processes produce a spatially oscillating contribution. Due to the nonlocal damping, the thermal fluctuations become spatially correlated over the entire system. We estimate the characteristic magnetization relaxation times for magnetic quantum wires and nuclear helimagnets.