Asymmetrical plasmonic absorber and reflector based on tilted Weyl semimetals

Abstract We investigate the surface plasmon polariton dispersion and optical spectra of a thin film of tilted Weyl semimetal. Tilted Weyl semimetals possess tilted Weyl cones at the Weyl nodes and are categorized to type-I with closed Fermi surfaces and type-II with overtilted Weyl cones and open Fe...

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Autores principales:	Somayeh Oskoui Abdol, Babak Abdollahipour
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6ab480438ac441c19decf4ba3fa6e690
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spelling	oai:doaj.org-article:6ab480438ac441c19decf4ba3fa6e6902021-12-02T16:06:42ZAsymmetrical plasmonic absorber and reflector based on tilted Weyl semimetals10.1038/s41598-021-94808-y2045-2322https://doaj.org/article/6ab480438ac441c19decf4ba3fa6e6902021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94808-yhttps://doaj.org/toc/2045-2322Abstract We investigate the surface plasmon polariton dispersion and optical spectra of a thin film of tilted Weyl semimetal. Tilted Weyl semimetals possess tilted Weyl cones at the Weyl nodes and are categorized to type-I with closed Fermi surfaces and type-II with overtilted Weyl cones and open Fermi surfaces. We find that the surface plasmon polariton dispersion of this system is nonreciprocal even in the absence of the external magnetic field. Moreover, we demonstrate that the tilt parameter has a profound effect in controlling this nonreciprocity. We reveal that the thin film of type-II Weyl semimetal hosts the surface plasmon polariton modes with the negative group velocity. Furthermore, we show that the angular optical spectra of this structure are highly asymmetric and this angular asymmetry in the absorptivity and reflectivity depends profoundly on the tilt parameter of the tilted Weyl semimetal. These exciting features propose employing the tilted Weyl semimetals in optical sensing devices, optical data storage, and devices for quantum information processing.Somayeh Oskoui AbdolBabak AbdollahipourNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Somayeh Oskoui Abdol Babak Abdollahipour Asymmetrical plasmonic absorber and reflector based on tilted Weyl semimetals
description	Abstract We investigate the surface plasmon polariton dispersion and optical spectra of a thin film of tilted Weyl semimetal. Tilted Weyl semimetals possess tilted Weyl cones at the Weyl nodes and are categorized to type-I with closed Fermi surfaces and type-II with overtilted Weyl cones and open Fermi surfaces. We find that the surface plasmon polariton dispersion of this system is nonreciprocal even in the absence of the external magnetic field. Moreover, we demonstrate that the tilt parameter has a profound effect in controlling this nonreciprocity. We reveal that the thin film of type-II Weyl semimetal hosts the surface plasmon polariton modes with the negative group velocity. Furthermore, we show that the angular optical spectra of this structure are highly asymmetric and this angular asymmetry in the absorptivity and reflectivity depends profoundly on the tilt parameter of the tilted Weyl semimetal. These exciting features propose employing the tilted Weyl semimetals in optical sensing devices, optical data storage, and devices for quantum information processing.
format	article
author	Somayeh Oskoui Abdol Babak Abdollahipour
author_facet	Somayeh Oskoui Abdol Babak Abdollahipour
author_sort	Somayeh Oskoui Abdol
title	Asymmetrical plasmonic absorber and reflector based on tilted Weyl semimetals
title_short	Asymmetrical plasmonic absorber and reflector based on tilted Weyl semimetals
title_full	Asymmetrical plasmonic absorber and reflector based on tilted Weyl semimetals
title_fullStr	Asymmetrical plasmonic absorber and reflector based on tilted Weyl semimetals
title_full_unstemmed	Asymmetrical plasmonic absorber and reflector based on tilted Weyl semimetals
title_sort	asymmetrical plasmonic absorber and reflector based on tilted weyl semimetals
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/6ab480438ac441c19decf4ba3fa6e690
work_keys_str_mv	AT somayehoskouiabdol asymmetricalplasmonicabsorberandreflectorbasedontiltedweylsemimetals AT babakabdollahipour asymmetricalplasmonicabsorberandreflectorbasedontiltedweylsemimetals
_version_	1718384907187650560

Asymmetrical plasmonic absorber and reflector based on tilted Weyl semimetals

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