SKM 2023 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 47: Skyrmions IV

MA 47.11: Vortrag

Freitag, 31. März 2023, 12:15–12:30, HSZ 04

Artificial surface conductivity on metallic metamaterials and its effect on localized plasmon skyrmions — •Amin Khavasi¹ and Karin Everschor-Sitte^1,2 — ¹Faculty of Physics, University of Duisburg-Essen, 47057 Duisburg, Germany — ²Center for Nanointegration Duisburg-Essen (CENIDE), Duisburg, Germany

Metallic metamaterials have been widely investigated for realizing different peculiar effects such as spoof surface plasmons [1] and extraordinary transmission of light [2]. Recently, topologically robust localized plasmonic skyrmions have been realized by spiral metallic meta-structures [3, 4].

For metal films with a periodic arrangement of cut-through slits, Khavasi and others have shown that the structure can be modeled by an anisotropic medium with an artificial surface conductivity [5]. In the subwavelength regime, the surface conductivity is imaginary considering lossless systems representing non-specular higher diffracted orders. We investigate the consequences of such artificial surface conductivities for the skyrmionic modes of the spiral meta-structures to obtain more insight on the behavior of the localized plasmonic skyrmions.

References:

[1] Pendry, J. B., et al., science 305, (2004): 847-848.

[2] Porto, J. A., et al., Physical review letters 83,(1999): 2845.

[3] Davis, T. J., et al. Science 368, (2020): eaba6415.

[4] Deng, Z., et al., Nature Communications 13, (2022): 1-7.

[5] Edalatipour, M., et al., Journal of lightwave technology 30, (2012): 1789-1794.