This dataset was submitted on 2025-04-22 by Fuyang Tay.

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GENERAL INFORMATION
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Dataset Title: "Terahertz chiral photonic-crystal cavities for Dirac gap engineering in graphene"

Author information:
The simulations were performed by Fuyang Tay with input from Stephen Sanders, Andrey Baydin, and Alessandro Alabastri.
Principle Investigator: Junichiro Kono, kono@rice.edu
Alternate Contact: Fuyang Tay, ft13@rice.edu; Alessandro Alabastri, alabastri@rice.edu

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DATA & FILE OVERVIEW
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The manuscript was published in Nature Communications in 2025. The preprint is available at https://arxiv.org/abs/2410.21171.

The dataset contains the COMSOL simulation data for the figures in the main manuscript, including the normalized power spectra for different polarizations, and the |E_-| profile and the ellipticity profile. This includes the simulations for the linear cavity and designs I-IV discussed in the manuscript.

For .csv files named with "..._Normalized power", the columns represent frequency (THz), P_minus, P_plus, P_x, and P_y, respectively.

For .txt files named with "...Eminusmodeprofile" or "...ellipticity", the columns represent z position (um) and |E_-| or \eta, respectively. The columns are separated by tabs.

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SHARING/ACCESS INFORMATION
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Citation for and links to publications that cite or use the data:
Tay, F. (2025): Terahertz chiral photonic-crystal cavities for Dirac gap engineering in graphene. [Dataset]. Rice University.

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METHODOLOGICAL INFORMATION
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The transmitted power spectra and electric field mode profiles of the cavities are computed using COMSOL Multiphysics 6.2. The simulation domain consists of a multilayer structure arranged as: perfectly matched layer (PML)/air/cavity/air/PML. Periodic boundary conditions are applied to the lateral (side) walls to model an infinite array, while scattering boundary conditions are implemented behind the PMLs to minimize artificial reflections. A periodic port is used to excite the structure with an incident wave. To compute the normalized transmitted power spectra, the transmitted electric field is integrated over a two-dimensional plane located in the air region beyond the cavity. Simulations are performed for various magnetic field strengths B by importing the corresponding permittivity of the magnetoplasma at each B.