AI 中文总结
该研究推导了铁磁薄膜中斯格明子弦的弯曲振荡本征频率公式,并通过数值计算在离散自旋晶格模型及有限温度晶格中验证了该结果,为斯格明子弦的振荡特性研究提供了理论与数值依据。
AI 中文摘要
研究表明,由N个原子层构成的铁磁薄膜中的斯格明子弦会以本征频率|ωₘ|=(4J'S/ħ)sin²[πm/(2N)]发生弯曲振荡,其中J'为层间交换耦合,S为原子自旋长度,m=1,…,N-1。该结果通过数值计算得到验证,涉及最多十个原子层的离散微观自旋晶格模型中的单个斯格明子弦,以及有限温度下的斯格明子弦晶格。
英文摘要
It is shown that a skyrmion string in a ferromagnetic film consisting of $N$ atomic layers exhibits flexural oscillations at eigenfrequencies $|ω_{m}|=(4J'S/\hbar)\sin^{2}[πm/(2N)]$, where $J'$ is the interlayer exchange coupling, $S$ is the length of the atomic spin, and $m=1,...,N-1$. This result is confirmed numerically for individual skyrmion strings in a discrete microscopic spin-lattice model of up to ten atomic layers, as well as for skyrmion-string lattices at finite temperature.
Comments9 PR pages, 7 figures