Observation of the Kinetic Inductance Limitation for the Fundamental Magnetic Resonance in Ultrasmall Gold v‐Shape Split Ring Resonators

The achievable fundamental magnetic resonance in split ring resonators (SRR) is limited by the electron plasma oscillation in the metal. This so-called kinetic inductance limitation was predicted many years ago, but its experimental verification has been hindered due to nanofabrication challenges. Here, the first experimental demonstration of magnetic resonance frequency saturation is reported at 520 THz in ultrasmall v-shape gold SRRs. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.