Electrical Tuning of Terahertz Plasmonic Crystal Phases - Dataset

This is a set of research data related to the article titled "Electrical Tuning of Terahertz Plasmonic Crystal Phases", Phys. Rev. X 13, 041003 (2023). The set contains numerical data used to create the next Figures:Fig.1 panel (a) - dispersions of 2D plasmons given by Eq. (1) for ungated [Eq. (2)] and gated [Eq. (3)] AlGaN/GaN QW heterostructures;Fig.1 panel (c) - the plasmon spectrum under the grating in Brillouin zone-folding representation;Fig.3 panel (a) - calculated contour plot of the transmittance;Fig.3 panel (b) - transmittance as a function of the frequency at the selected values of gate voltage swing;Fig.5 - transfer current-voltage characteristic of the investigated PC structure;Fig.6 - experimental transmittance of S7 PC sample;Fig.7 - transmission spectra of the S7 PC sample at different gate-to-channel voltages;Fig.8 panel (a) - experimental contour plot of the transmittance of S7 sample;Fig.8 panel (b) - theoretical contour plot of the transmittance of S7 sample;Fig.9 panel (a) - experimental contour plot of the transmittance of S13 sample;Fig.9 panel (b) - experimental contour plot of the transmittance of S8 sample;Fig.10 - the gate voltage dependencies of the additional depletion length;Fig.11 - experimental and simulated transmittance of S7 PC sample;Fig.12 panel (a) - spatial distribution of Ex amplitude in one period of PC at VG=0V calculated for the fundamental plasmon resonance at 1.2 THz;Fig.12 panel (b) - local absorptivity in one period of PC at VG=0V calculated for the fundamental plasmon resonance at 1.2 THz;Fig.12 panel (c) - spatial distribution of Ex amplitude in one period of PC at VG=0V calculated for the second-order resonance at 2.4 THz;Fig.12 panel (d) - local absorptivity in one period of PC at VG=0V calculated for the second-order resonance at 2.4 THz;Fig.13 panel (a) - spatial distribution of Ex amplitude in one period of PC at VG=-3V calculated for the fundamental plasmon resonance at 2.3 THz;Fig.13 panel (b) - local absorptivity in one period of PC at VG=-3V calculated for the fundamental plasmon resonance at 2.3 THz;Fig.13 panel (c) - spatial distribution of Ex amplitude in one period of PC at VG=-3V calculated for the second-order resonance at 6.1 THz;Fig.13 panel (d) - local absorptivity in one period of PC at VG=-3V calculated for the second-order resonance at 6.1 THz;Fig.14 - Experimental and simulated transmittance of the S7 PC sample at VG = -3.5 V.