The wave impedance of an atomically thin crystal

15 Dec 2015  ·  Merano Michele ·

I propose an expression for the electromagnetic wave impedance of a two-dimensional atomic crystal, and I deduce the Fresnel coefficients in terms of this quantity. It is widely known that a two-dimensional crystal can absorb light, if its conductivity is different from zero... It is less emphasized that they can also store a certain amount of electromagnetic energy. The concept of impedance is useful to quantify this point. read more

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Optics