论文标题
使用光诱导的坚元来调整散装拓扑磁蛋白特性
Tuning bulk topological magnon properties with light-induced magnons
论文作者
论文摘要
尽管理论建模和非弹性中子散射测量表明在多个量子磁体中存在拓扑镁谱带，但实验仍无法检测量子磁体中镁棒热霍尔效应的信号，这是Bose Einstein统计范围后带有BERRER ENSTECTIS液和伯里浓度浓度的浓缩率的镁底部的镁凝结的结果。在最近的一项工作中，Malz等人[Nature Communications 10，3937（2019）]表明，可以使用量身定制的电磁场来放大有限样品中边缘状态中的拓扑镁。我们通过表明均匀的电磁场可以通过破坏晶格的反转对称性来选择性扩增镁胶曲率来扩展其方法。使用这种方法，我们证明了在呼吸kagome晶格上的海森贝格·铁磁铁中产生的散装巨龙，并随之而来的热霍尔效应的扩增。
Although theoretical modelling and inelastic neutron scattering measurements have indicated the presence of topological magnon bands in multiple quantum magnets, experiments remain unable to detect signal of magnon thermal Hall effect in the quantum magnets, which is a consequence of magnons condensation at the bottom of the bands following Bose Einstein statistics as well as the concentration of Berry curvature at the higher energies. In a recent work, Malz et al.[Nature Communications 10, 3937 (2019)] have shown that topological magnons in edge states in a finite sample can be amplified using tailored electromagnetic fields. We extend their approach by showing that a uniform electromagnetic field can selectively amplify magnons with finite Berry curvature by breaking inversion symmetry of a lattice. Using this approach, we demonstrate the generation of bulk topological magnons in a Heisenberg ferromagnet on the breathing kagome lattice and the consequent amplification of thermal Hall effect.
