Optical Magnetic Response in a Single Metal Nanobrick

TL;DR

This paper demonstrates that a single silver nanobrick can produce optical magnetism in the blue, violet, and part of the ultraviolet spectrum by exploiting anti-symmetric localized surface plasmons, expanding the understanding of nanoscale magnetic responses.

Contribution

It introduces a novel approach to generate optical magnetism using a single metal nanobrick with anti-symmetric localized surface plasmons, which was not previously demonstrated.

Findings

Single silver nanobricks can produce optical magnetism.

Anti-symmetric localized surface plasmons enable magnetic response.

Magnetic response observed in blue, violet, and ultraviolet light ranges.

Abstract

Anti-symmetric localized surface plasmons are demonstrated on a single silver nanostrip sandwiched by SiC layers. By employing the resonance of anti-symmetric localized surface plasmons, we enable single metal nanobricks to produce optical magnetism, in the blue and violet light range, as well as in a part of the ultraviolet light range. The physical mechanism is explained.