A tunable plasmonic resonator using kinetic 2D inductance and patch capacitance

TL;DR

This paper presents a tunable 2D plasmonic resonator based on kinetic inductance and patch capacitance, allowing frequency control via electron density, magnetic field, or electrode size, suitable for adaptable microwave applications.

Contribution

It introduces a novel tunable plasmonic resonator design using kinetic inductance and capacitance, enabling dynamic frequency control in microwave regimes.

Findings

Resonant frequency can be tuned by electron density.

External magnetic field adjusts the resonance.

Resonator size influences frequency tuning.

Abstract

We have studied microwave response of a high-mobility two-dimensional electron system (2DES) contacted by two side electrodes. Using kinetic inductance of the 2DES and inter-electrode capacitance, we have constructed a subwavelength 2D plasmonic resonator. We have shown that the resonant frequency of this circuit can be controlled by 2D electron density, external magnetic field, or size of the electrodes. This opens up possibilities for using arrays of plasmonic circuits as tunable components in different frequency ranges.