论文标题
双层铁磁绝缘子中的dirac木元素的拓扑山谷运输
Topological Valley Transport of Gapped Dirac Magnons in Bilayer Ferromagnetic Insulators
论文作者
论文摘要
双层Heisenberg铁磁绝缘子保持退化的Terahertz Dirac Magnon模式，与六角形布里鲁因区的两个相对的山谷相关。我们表明，可以通过破坏反转对称（i）来消除这种能量退化，从而导致拓扑岩谷电流。我们还表明，这种电流会导致谷物谷的山地效应，因此可以检测到。我们在BiLayer CRBR3的特定示例中执行计算，在该示例中，我可以通过静电掺杂破裂。
Bilayer Heisenberg ferromagnetic insulators hold degenerate terahertz Dirac magnon modes associated with two opposite valleys of the hexagonal Brillouin zone. We show that this energy degeneracy can be removed by breaking of the inversion symmetry (I), leading to a topological magnon valley current. We show furthermore that this current leads to valley Seebeck effect for magnons and is thereby detectable. We perform calculations in the specific example of bilayer CrBr3, where I can be broken by electrostatic doping.
