Giant topological magnetoelectric and optical Hall effects for topological insulator as a defect in photonic crystal

Peng Wang; Qin Liu; Wei Li; Xunya Jiang

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arXiv · 1101.4735

Giant topological magnetoelectric and optical Hall effects for topological insulator as a defect in photonic crystal

Peng Wang·Qin Liu·Wei Li·Xunya Jiang

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Abstract

A system with a topological insulator slab sandwiched by two one-dimensional photonic crystals as a defect is investigated. A giant topological magnetoelectric effect is proposed which is characterized by two resonant peaks with half-unit transmissions and rich polarization behaviors in the photonic band gap. We also predict a giant optical Hall effect in our system, in which the transverse shift of the transmitted light could be thousand times larger than the wavelength. These effects are purely from the $\Theta$-domain walls at the topological insulator interfaces and could be observed easily. These effects can also be used as the sensitive detection of basic physical constants.

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Peng Wang, Qin Liu, Wei Li, Xunya Jiang. 2011-01-25. Giant topological magnetoelectric and optical Hall effects for topological insulator as a defect in photonic crystal. https://arxiv.org/abs/1101.4735

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