一维\begin{document}${\cal {PT}}$\end{document}对称非厄米自旋轨道耦合Su

图 1  非厄米自旋轨道SSH模型示意图. A和B表示两种晶格, 紫色上箭头和绿色下箭头分别表示具有增益和损耗的虚势能${\rm{i}}\gamma$和$-{\rm{i}}\gamma$, 浅绿色线和黑色线分别表示胞内跃迁v和胞间跃迁w, 蓝色线和粉色线表示胞内自旋轨道耦合跃迁$\lambda_v$和胞间自旋轨道耦合跃迁$\lambda_w$

Fig. 1.  Schematic diagram of the non-Hermitian spin-orbit SSH model. A and B represent two kinds of lattices, and purple-up and green-down arrows represent imaginary potentials ${\rm{i}}\gamma$ and $-{\rm{i}}\gamma$, respectively. Light-green and black lines denote intracell hopping v and intercell hopping w, and the blue and pink lines describe the intracell spin-orbit coupling $\lambda_v$ and the intercell spin-orbit coupling $\lambda_w$