Pokrovsky A L, Efros A L
Department of Physics, University of Utah, Salt Lake City, Utah 84112, USA.
Phys Rev Lett. 2002 Aug 26;89(9):093901. doi: 10.1103/PhysRevLett.89.093901. Epub 2002 Aug 9.
An analytical theory of low frequency electromagnetic waves in metallic photonic crystals with a small volume fraction of a metal is presented. The evidence for such waves has been obtained recently by experiments and computations. The cutoff frequency of these waves, omega(0), is studied. An analytical expression for the permittivity epsilon is obtained and shown to be negative below omega(0). If the crystal is embedded into a medium with a negative mu, there are no propagating modes at any frequency. Thus, such a compound system is not a left-handed material (LHM). The recent experimental results on the LHM are discussed.
提出了一种关于金属体积分数较小的金属光子晶体中低频电磁波的解析理论。最近通过实验和计算获得了此类波存在的证据。研究了这些波的截止频率ω(0)。得到了介电常数ε的解析表达式，并表明在ω(0)以下它为负。如果将晶体嵌入具有负磁导率μ的介质中，则在任何频率下都不存在传播模式。因此，这样的复合系统不是左手材料（LHM）。讨论了最近关于左手材料的实验结果。
