Asymmetries in surface waves and reflection/transmission characteristics associated with topological insulators

Tom G. Mackay, Francesco Chiadini, Vincenzo Fiumara, Antonio Scaglione, Akhlesh Lakhtakia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Three numerical studies were undertaken involving the interactions of plane waves with topological insulators. In each study, the topologically insulating surface states of the topological insulator were represented through a surface admittance. Canonical boundary-value problems were solved for the following cases: (i) Dyakonov surface-wave propagation guided by the planar interface of a columnar thin film and an isotropic dielectric topological insulator; (ii) Dyakonov-Tamm surface-wave propagation guided by the planar interface of a structurally chiral material and an isotropic dielectric topological insulator; and (iii) reflection and transmission due to the planar interface of a topologically insulating columnar thin film and vacuum. The nonzero surface admittance resulted in asymmetries in the wave speeds and decay constants of the surface waves in studies (i) and (ii). The nonzero surface admittance resulted in asymmetries in the reflectances and transmittances in study (iii).

Original languageEnglish (US)
Title of host publicationNanostructured Thin Films X
EditorsTom G. Mackay, Yi-Jun Jen, Akhlesh Lakhtakia
PublisherSPIE
ISBN (Electronic)9781510611696
DOIs
StatePublished - 2017
EventNanostructured Thin Films X 2017 - San Diego, United States
Duration: Aug 9 2017Aug 10 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10356
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherNanostructured Thin Films X 2017
CountryUnited States
CitySan Diego
Period8/9/178/10/17

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Mackay, T. G., Chiadini, F., Fiumara, V., Scaglione, A., & Lakhtakia, A. (2017). Asymmetries in surface waves and reflection/transmission characteristics associated with topological insulators. In T. G. Mackay, Y-J. Jen, & A. Lakhtakia (Eds.), Nanostructured Thin Films X [103560H] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10356). SPIE. https://doi.org/10.1117/12.2271940