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Controlling magnetism at the nanoscale with metamaterials

Controlling magnetism at the nanoscale with metamaterials
Controlling magnetism at the nanoscale with metamaterials
Controlling magnetic fields at ever shorter time and length scales is important for both fundamental solid-state physics and technological applications such as spectroscopy, sensing, magnetic data recording. Here, we will present recent progress towards the generation and control of magnetic fields at the nanoscale. We will show that combining plasmonic and ferromagnetic metals in bimetallic nanorings leads to strong Kerr rotation enhancement. Moreover, when illuminated by femtosecond laser pulses, such arrays respond with transient thermoelectric currents of picosecond duration, which in turn induce Tesla-scale magnetic fields in the ring cavity. We will demonstrate that equivalent levels of confinement can be obtained at even higher frequencies by appealing to the deep sub-wavelength nature of plasmons in semi-metals, where strong, tunable magnetic response can be observed in electrically doped monolayers. Our results provide avenues to nanoscale magnetic fields and hold great potential for materials characterization, terahertz radiation generation, and data storage applications.
Papasimakis, N.
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Atmatzakis, E.
50cd8140-449f-46c1-b268-e9e042664b45
Tsiatmas, A.
dcdf5850-3825-490d-9dd2-4114d4e2e4b2
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Luk'yanchuk, B.
f5c04e91-ba1a-40c5-8f0b-279011c6f2eb
García de Abajo, F.J.
68958b41-966f-49ef-9578-d0ffa446b33e
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Papasimakis, N.
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Atmatzakis, E.
50cd8140-449f-46c1-b268-e9e042664b45
Tsiatmas, A.
dcdf5850-3825-490d-9dd2-4114d4e2e4b2
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Luk'yanchuk, B.
f5c04e91-ba1a-40c5-8f0b-279011c6f2eb
García de Abajo, F.J.
68958b41-966f-49ef-9578-d0ffa446b33e
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Papasimakis, N., Atmatzakis, E., Tsiatmas, A., Fedotov, V.A., Luk'yanchuk, B., García de Abajo, F.J. and Zheludev, N.I. (2014) Controlling magnetism at the nanoscale with metamaterials. SPIE Photonics Europe '14, Brussels, Belgium. 14 - 17 Apr 2014.

Record type: Conference or Workshop Item (Other)

Abstract

Controlling magnetic fields at ever shorter time and length scales is important for both fundamental solid-state physics and technological applications such as spectroscopy, sensing, magnetic data recording. Here, we will present recent progress towards the generation and control of magnetic fields at the nanoscale. We will show that combining plasmonic and ferromagnetic metals in bimetallic nanorings leads to strong Kerr rotation enhancement. Moreover, when illuminated by femtosecond laser pulses, such arrays respond with transient thermoelectric currents of picosecond duration, which in turn induce Tesla-scale magnetic fields in the ring cavity. We will demonstrate that equivalent levels of confinement can be obtained at even higher frequencies by appealing to the deep sub-wavelength nature of plasmons in semi-metals, where strong, tunable magnetic response can be observed in electrically doped monolayers. Our results provide avenues to nanoscale magnetic fields and hold great potential for materials characterization, terahertz radiation generation, and data storage applications.

Full text not available from this repository.

More information

e-pub ahead of print date: 2014
Venue - Dates: SPIE Photonics Europe '14, Brussels, Belgium, 2014-04-14 - 2014-04-17
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 375903
URI: https://eprints.soton.ac.uk/id/eprint/375903
PURE UUID: 5e7bd1df-97d6-4dc0-a6e0-82642f4ff36a
ORCID for N. Papasimakis: ORCID iD orcid.org/0000-0002-6347-6466
ORCID for N.I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 21 Apr 2015 14:28
Last modified: 21 May 2019 00:38

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Contributors

Author: N. Papasimakis ORCID iD
Author: E. Atmatzakis
Author: A. Tsiatmas
Author: V.A. Fedotov
Author: B. Luk'yanchuk
Author: F.J. García de Abajo
Author: N.I. Zheludev ORCID iD

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