Work

Tailoring transverse magneto-optical Kerr effect enhancement in Mie-resonant nanowire-based metasurfaces

Year: 2025

Type: article

Abstract: Tailoring of the transverse magneto-optical Kerr effect (TMOKE) in hybrid metasurfaces comprising rectangular silicon nanowires coupled with a nickel substrate is demonstrated. The excitation of Mie modes of different orders in nanowires causes TMOKE enhancement. The in-plane magnetic dipole mode leads to the largest TMOKE enhancement compared to other Mie modes. Changing the width of silicon nanowires entails a modification of that mode, thereby ensuring tailoring of the TMOKE within the range of 2.2%–3.8%. This tunability is associated with the modification of the near-field localized at the Si/Ni interface and the far-field response of the excited magnetic dipole mode. Adjusting these two quantities allows one to achieve the highest values of the TMOKE caused by individual Mie modes in silicon nanowires.

Source: Applied Physics Letters

DOI: 10.1063/5.0257020

Authors: K. A. Mamian, V. V. Popov, A. Yu. Frolov, A. A. Fedyanin

Institution: Lomonosov Moscow State University

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: Russian Science Foundation, Lomonosov Moscow State University

Award: G5137260402