论文标题
手性介质与金属之间的表面等离子体共振中的截止和旋转式翻转
Cut-offs and light-spin flips in surface plasmon resonance between a chiral medium and a metal
论文作者
论文摘要
我们得出了沿金属和手性培养基（手性情况）之间平面界面建立的表面等离子体共振的分散关系。将所得的数值溶液与金属丝接口获得的众所周知的结果（ACHIRAL CASE）进行了比较。比较表明，手性案例表现出的相位速度较小。在手性情况下，这种纵向减速是由建立纵向自旋密度所花费的能量引起的，这与中性手性相对于反对称。此外，在手性情况下，低频范围是不允许的。讨论了相关的能量再分配，旋转轨道耦合和应用。
We have derived a dispersion relation governing the surface plasmon resonance established along a planar interface between a metal and a chiral medium (chiral case). Resulting numerical solutions are compared with the well-known results obtained for a metal-dielectric interface (achiral case). Comparisons show that the chiral case exhibits smaller phase speeds than the achiral case. Such a longitudinal deceleration in the chiral case is caused by the energy expended on establishing the longitudinal spin density, which turns out anti-symmetric with respect to medium chirality. Moreover, the low-frequency range is disallowed in the chiral case. Relevant energy redistributions, spin-orbital couplings, and applications are discussed.
