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arXiv 1703.09366cond-mat.mes-hallquant-ph
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光子拓扑绝缘体中光子的带隙质量

Gap dependent mass of photon in photonic topological insulator

Marcelo Vieira, Sergei Sergeenkov, Claudio Furtado

摘要:

通过与类轴子系统的类比,研究了光在周期光子拓扑绝缘体(PTI)中的传播。本文的主要结果是PTI能带结构的一个显式表达式。更具体地,发现对于拓扑相位差$γ=θ_2-θ_1$的非零值,在光谱中打开有限间隙$δ\proptoγ^2$,这等效于非零有效光子质量$m^{*}(δ)\propto \frac{\sqrtδ}{δ+2}$的出现。

英文摘要:

By using an analogy with axionic like systems, we study light propagation in periodic photonic topological insulator (PTI). The main result of this paper is an explicit expression for the PTI band structure. More specifically, it was found that for nonzero values of the topological phase difference $γ=θ_2-θ_1$ a finite gap $δ\proptoγ^2$ opens in the spectrum which is equivalent to appearance of nonzero effective photon mass $m^{*}(δ)\propto \frac{\sqrtδ}{δ+2}$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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