论文标题
纹理诱导的自旋轨道耦合和néel抗fiferromagnet中的Skyrmion-Electron结合状态
Texture-induced spin-orbit coupling and Skyrmion-electron bound states in a Néel antiferromagnet
论文作者
论文摘要
在存在交错磁化的光滑质地的情况下，我们为NéelAntiferromagnet得出有效的质量Hamiltonian。对于Electron Band Extrema的某些位置，该纹理产生了比例$ \ hbar v / l $的特殊且异常强的自旋轨道耦合，并带有$ v $ fermi速度和$ l $ $ l $纹理的特征长度比例。对于天空质量，该耦合生成电子结合状态，其能量尺度由电子光谱中的gap $δ$给出。使用掺杂载体，这种结合状态将天空变成一个带电的粒子，可以通过电场操纵。
We derive effective-mass electron Hamiltonian for a Néel antiferromagnet in the presence of a smooth texture of the staggered magnetization. For certain locations of electron band extrema, the texture produces a peculiar and anomalously strong spin-orbit coupling of the scale $\hbar v / L$, with $v$ the Fermi velocity and $L$ the characteristic length scale of the texture. For a Skyrmion texture, this coupling generates electron bound states, whose energy scale is given by the gap $Δ$ in the electron spectrum. With dopant carriers, such bound states turn the Skyrmion into a charged particle, that can be manipulated by electric field.
