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.
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Adamo, G.
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Sulaev, A.
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Wang, L.
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Zheludev, N.I.
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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.
More information
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: http://eprints.soton.ac.uk/id/eprint/366346
PURE UUID: 55b828aa-1788-4f23-b5e0-54308ca050b8
Catalogue record
Date deposited: 30 Jun 2014 11:18
Last modified: 15 Mar 2024 03:39
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Contributors
Author:
J-Y. Ou
Author:
J.K. So
Author:
G. Adamo
Author:
A. Sulaev
Author:
L. Wang
Author:
N.I. Zheludev
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