AHC Neto

CT Chan

D Han

D Torrent

F Liu

FDM Haldane

FV Tikhonenko

G D’Aguanno

KS Novoselov

LG Wang

M Diem

M Plihal

M Shen

P Zhang

RA Sepkhanov

S Bittner

S Raghu

SR Zandbergen

T Ochiai

X Huang

X Wang

Y Zhang

Scientific Reports

AbstractThe phenomena of the minimum transmittance spectrum or the maximum reflection spectrum located around the Dirac frequency have been observed to demonstrate the 1/L scaling law near the Dirac-like point through the finite ribbon structure. However, so far there is no effective way to identify the Dirac-like point accurately. In this work we provide an effective measurement method to identify the Dirac-like point accurately through a finite photonic crystal square matrix. Based on the Dirac-like dispersion achieved by the accidental degeneracy at the centre of the Brillouin zone of dielectric photonic crystal, both the simulated and experimental results demonstrate that the transmittance spectra through a finite photonic crystal square matrix not only provide the clear evidence for the existence of Dirac-like point but also can be used to identify the precise location of Dirac-like point by the characteristics of sharp cusps embedded in the extremum spectra surrounding the conical singularity.</jats:p

Guoyan Dong

Ji Zhou

Xiulun Yang

Xiangfeng Meng

Crossref

Precise identification of Dirac-like point through a finite photonic crystal square matrix

Precise identification of Dirac-like point through a finite photonic crystal square matrix

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