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Plasmonics of topological insulators at UV-visible frequencies

Plasmonics of topological insulators at UV-visible frequencies
Plasmonics of topological insulators at UV-visible frequencies
We report the first observation of the plasmonic behavior of a semiconducting material, Bi1.5Sb0.5Te1.8Se1.2, at the UV and visible frequencies, which was revealed by spectroscopic ellipsometry, reflection and cathodoluminescence measurements. Its plasmonic response originates from the negative dielectric permittivity at the material’s first absorption edge, which is rarely seen in nature, together with the contribution of the nontrivial surface conducting states of the material.
Ou, J-Y.
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So, J.K.
06a7afea-61c2-439d-9ac4-047ea21a909b
Adamo, G.
a614528b-81c3-4f38-a709-5e582b03e7d2
Sulaev, A.
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Wang, L.
ff28fc9d-dbeb-460f-943c-f49997f58bf7
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Ou, J-Y.
3fb703e3-b222-46d2-b4ee-75f296d9d64d
So, J.K.
06a7afea-61c2-439d-9ac4-047ea21a909b
Adamo, G.
a614528b-81c3-4f38-a709-5e582b03e7d2
Sulaev, A.
7a6e7d91-7586-453c-8956-8c07f430d996
Wang, L.
ff28fc9d-dbeb-460f-943c-f49997f58bf7
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Ou, J-Y., So, J.K., Adamo, G., Sulaev, A., Wang, L. and Zheludev, N.I. (2014) Plasmonics of topological insulators at UV-visible frequencies. 5th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META'14), Singapore. 20 - 23 May 2014.

Record type: Conference or Workshop Item (Other)

Abstract

We report the first observation of the plasmonic behavior of a semiconducting material, Bi1.5Sb0.5Te1.8Se1.2, at the UV and visible frequencies, which was revealed by spectroscopic ellipsometry, reflection and cathodoluminescence measurements. Its plasmonic response originates from the negative dielectric permittivity at the material’s first absorption edge, which is rarely seen in nature, together with the contribution of the nontrivial surface conducting states of the material.

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e-pub ahead of print date: 2014
Venue - Dates: 5th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META'14), Singapore, 2014-05-20 - 2014-05-23
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 366346
URI: https://eprints.soton.ac.uk/id/eprint/366346
PURE UUID: 55b828aa-1788-4f23-b5e0-54308ca050b8
ORCID for J-Y. Ou: ORCID iD orcid.org/0000-0001-8028-6130
ORCID for N.I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 30 Jun 2014 11:18
Last modified: 16 May 2019 00:38

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