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Toroidal circular dichroism

Toroidal circular dichroism
Toroidal circular dichroism
We demonstrate that the induced toroidal dipole, represented by currents flowing on the surface of a torus, makes a distinct and indispensable contribution to circular dichroism. We show that toroidal circular dichroism supplements the well-known mechanism involving electric dipole and magnetic dipole transitions. We illustrate this with rigorous analysis of the experimentally measured, polarization-sensitive transmission spectra of an artificial metamaterial, constructed from elements of toroidal symmetry. We argue that toroidal circular dichroism shall be found in large biomolecules with elements of toroidal symmetry and should be taken into account in the interpretation of circular dichroism spectra of organics.
1550-235X
1-5
Raybould, T.A.
cd82c867-4261-44fa-ac5e-b1e537b6958f
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Papasimakis, N.
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Kuprov, I.
bb07f28a-5038-4524-8146-e3fc8344c065
Youngs, I.J.
f8b9b893-a60e-4281-840a-62d7b789cae4
Chen, W.T.
e1e9d172-77bb-47a4-a91e-57d017b381b4
Tsai, D.P.
ac188460-c076-41ee-bce4-7aa873f757e3
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Raybould, T.A.
cd82c867-4261-44fa-ac5e-b1e537b6958f
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Papasimakis, N.
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Kuprov, I.
bb07f28a-5038-4524-8146-e3fc8344c065
Youngs, I.J.
f8b9b893-a60e-4281-840a-62d7b789cae4
Chen, W.T.
e1e9d172-77bb-47a4-a91e-57d017b381b4
Tsai, D.P.
ac188460-c076-41ee-bce4-7aa873f757e3
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Raybould, T.A., Fedotov, V.A., Papasimakis, N., Kuprov, I., Youngs, I.J., Chen, W.T., Tsai, D.P. and Zheludev, N.I. (2016) Toroidal circular dichroism. Physical Review B, 94 (3), 1-5. (doi:10.1103/PhysRevB.94.035119).

Record type: Article

Abstract

We demonstrate that the induced toroidal dipole, represented by currents flowing on the surface of a torus, makes a distinct and indispensable contribution to circular dichroism. We show that toroidal circular dichroism supplements the well-known mechanism involving electric dipole and magnetic dipole transitions. We illustrate this with rigorous analysis of the experimentally measured, polarization-sensitive transmission spectra of an artificial metamaterial, constructed from elements of toroidal symmetry. We argue that toroidal circular dichroism shall be found in large biomolecules with elements of toroidal symmetry and should be taken into account in the interpretation of circular dichroism spectra of organics.

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More information

Accepted/In Press date: 6 June 2016
e-pub ahead of print date: 8 July 2016
Published date: 8 July 2016
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 396856
URI: https://eprints.soton.ac.uk/id/eprint/396856
ISSN: 1550-235X
PURE UUID: a456e0e1-ecd6-4e32-a8d6-1639603fcdd4
ORCID for N. Papasimakis: ORCID iD orcid.org/0000-0002-6347-6466
ORCID for I. Kuprov: ORCID iD orcid.org/0000-0003-0430-2682
ORCID for N.I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 17 Jun 2016 16:04
Last modified: 10 Dec 2019 06:30

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