论文标题
Casimir-Lifshitz扭矩的竞争引起的符号逆转：拓扑结构半学的调查
Competition-Induced Sign Reversal of Casimir-Lifshitz Torque: An Investigation on Topological Node-Line Semimetal
论文作者
论文摘要
准颗粒在拓扑结构半法中的分散在不同方向上有显着差异。在一定方向上，准颗粒的行为像相对论粒子的恒定速度。在其他方向上，它们充当二维电子气体。相对论和非派系化分散体之间的竞争会引起Casimir-Lifshitz扭矩的标志逆转。可以采用三种不同的方法来产生此符号逆转，即在节点线半学中调整各向异性参数或化学电位，从而改变该材料和底物双折射之间的距离。使用拓扑节点线半计CA $ _3 $ _2 $和液晶材料4- cyano-4-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-pentylcyclohexane-phenyyl表示详细的计算。
The dispersion of quasiparticles in topological node-line semimetals is significantly different in different directions. In a certain direction, the quasiparticles behave like relativistic particles with constant velocity. In other directions, they act as two-dimensional electron gas. The competition between relativistic and nonrelativistic dispersions can induce a sign reversal of Casimir-Lifshitz torque. Three different approaches can be applied to generate this sign reversal, i.e., tuning the anisotropic parameter or chemical potential in node-line semimetal, changing the distance between this material and substrate birefringence. Detailed calculations are illustrated for the system with topological node-line semimetal Ca$_3$P$_2$ and liquid crystal material 4-cyano-4-n-pentylcyclohexane-phenyl.
