Topological cutoff frequency in a slab waveguide: Penetration length in topological insulator walls

Abstract

We study the propagation of electromagnetic (EM) waves in a slab-type waveguide which walls consist of three-dimensional topological insulator (3D TI). The results show that a cutoff frequency with topological stability limits the spectrum that propagates along the waveguide and are in agreement with experimental observations. Our approach also provides a way to measure the penetration length of surface metallic states in 3D TI.

5 pages,3 figures

References in corpus (12)

• Topological insulators and superconductors
• Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface
• A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
• Topological Field Theory of Time-Reversal Invariant Insulators
• The Quantum Spin Hall Effect: Theory and Experiment
• First Principles Studies on 3-Dimentional Strong Topological Insulators: Bi2Te3, Bi2Se3 and Sb2Te3
• THz response and colossal Kerr rotation from the surface states of the topological insulator Bi${}_2$Se${}_3$
• Topological insulators for high performance terahertz to infrared applications
• Optical conductivity of Bismuth-based topological insulator
• Electric-Magnetic Duality and Topological Insulators
• Optical evidence of surface state suppression in Bi based topological insulators
• Giant mesoscopic spin Hall effect on surface of topological insulator

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